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I think the three metal plates under the Pillar Of Autumn could be its MAC canon, as described in Halo: The Fall of Reach  --[[User:Climax Viod|Climax Viod]] 10:56, 23 October 2006 (UTC)
{{Archived}}
==MAC Yields and Realism==


[[Image:PoA.jpg|250px|right|thumb|See at its base]]
I just want to throw this out there since the talk page seems to be centered around the power of this weapon: none of the figures that have been calculated can be possible, and I doubt the authors of the novels or the encyclopedia considered logic too terribly much when they wrote them, thus they simply made up figures that sounded cool. Here's why 1.17 teratons is completely retarded and unrealistic: the covenant supercruiser of FoR took 3 MAC hits to its shield, and it didn't fail. That would be equal to 1.17*3=3.51 teratons of kinetic energy dissipated. The largest nuclear weapon ever detonated was the Tsar Bomba in 1961, at 50 megatons. Thus, the supercruiser's shield should have absorbed over 70000 times the energy of the world's most powerful nuclear weapon, which itself had a power output of 1.4% of the sun. If covenant ships can generate that much power, then one of them should be able to obliterate the planet (exaggeration, yes, just making a hyperbole here). HORNET mines, as seen in GoO, can destroy a fleet of covenant vessels, yet they are but a mere 30 megatons of yield. How is this possible? Because the MAC is not nearly as powerful as is asserted on this page. We know that covenant vessels can survive nuclear blasts in the multimegaton range undamaged, but as a nuclear detonation in space spreads its energy out spherically from the point of detonation, a comparatively tiny fraction of the energy is going to hit any given ship, even at point blank. Those who have asserted powers in the several kilotons are likely the most accurate in regard to the MAC power, given what we know about nuclear weapons vs covenant shields. And the power of the super MACS? All recharged in 5 seconds? Don't even get me started on the rediculous nature of THAT.... [[User talk:Quakeomaniac|Quakeomaniac]] 08:40, January 7, 2010 (UTC)


What do you think ?


* Yeah i think that looks right  --[[User:Xeon 800|Xeon 800]]--
#This is Sci-fi, get use to it.
#Non of the figures calculated can be possible? Its sci-fi and canon overrides all else.
#Lie, the shields of the super cruiser were downed by MAC 3 MAC rounds and around 500 Archer missiles.
#GoO is overruled by the latest canon info, the Halo Encyclopedia: The Definitive Guide to the Halo Universe. Per Bungies canon policy old overrules old so older sources can not be used to overrule it.
#Farther on Nukes: The UNSC NOVA Bomb is proof that the UNSC has Teraton range nuclear devices given that it is stated to be nine fusion warheads with yield increased a hundredfold which means each warhead is 1/900th of the low-end 1.2 Petatons!
If Megaton range weapons were able to be used why then would the UNSC not nuke spam the Covenant with the resources needed for one NOVA Bomb?
#Ah, trying to dispute a state canon fact that the SMACs per TFoR can fire every 5 seconds?
#This is sci-fi, watch Star Trek if you really want to see impossible stuff.{{Unsigned|207.200.116.136}}


*I think you could be right.--[[User:Ryanngreenday|Ryanngreenday]] 20:34, 23 October 2006 (UTC)
:Quakeomaniac does have a point, if not to point out the inconsistencies of ''Halo''. The Covenant shields do seem to possess different outputs and strengths, as many different weapons of different yields can be used to tear through their shields. A teraton range does seem unrealistic if a megaton warhead is enough. I would think that ships armed with MACs would have little trouble against Covenant ships. Aiming would be the hardest part. Can you be more clear on your 1.2 Petaton assertion? That seems like an AWFULLY large yield for a mere ''nine'' warheads, even if they are fusion.


*I agree, it most likley is. If it's not... what else could it be? - [[User:Knuxchao|Knuxchao]]
::As for Star Trek, yes the stuff is impossible, but the creators hired scientists, physicists, and other experts in the field to literally invent futuristic devices, sights, concepts, and technology that was not only futuristic and cool, but also scientifically possible, meaning we as the modern human race could produce it or find it given the proper resources. Everything on that show is something that could theoretically exist (can't speak for the new movie). <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 14:46, January 7, 2010 (UTC)


*Yeah I agree with it too, its the closest we've gotten to knowing where the MAC Gun is on the Pillar of Autumn, and it looks big enough for it to be a MAC gun too. [[User:Joshua 029]]
:::I appreciate you taking the time to consider what I said Orion rather than just call me an idiot with a bunch of nonsense. Regarding the inconsistencies, here's an interesting one. The page for the covenant carrier states it can withstand 3 MAC rounds (not sure where that comes from, I'll just take it for now). Yet, the supercruiser in TFoR also took 3 MACs and a bit more (the archers) to drop its own shields. This implies that the carrier and supercruiser, two drastically different sized ships, have roughly equal shields. Makes little sense. This could perhaps be rectified if we knew the yield of an archer missile relative to a MAC round, but we assume its low based on the book. As for the guy who doesn't bother to sign his comments: Yes, this is sci-fi, thank you captain obvious. This does not prevent a meaningful discussion of it. As far as canon, that's the whole point I'm making, nothing agrees. As for the supercruiser, can you tell me where I mentioned the archer missile part? The GoO assertation doesn't need comment. Also the NOVA bomb is nowhere near a normal nuke, and the technology used in it is NOT used in the reactors on ships, which is what powers the MAC. And I'm not trying to state the SMAC can't fire every five seconds, merely that its energy usasage (if it's a 9+ teraton shot) is unrealistically enormous. Anyway, please consider what I said and try to have a meaningful discussion on it rather than insult me. [[User talk:Quakeomaniac|Quakeomaniac]] 18:19, January 7, 2010 (UTC)


I Think those plates are just protection to the bridge. in halo combat evolved wasnt there like a big glass plate to see out of?-Mitch
::::No problem. I understand how these things are. Jumping the gun and rushing to false conclusions only makes hot heads and steeled tempers, so the whole debate turns into an honor fight or resembles two brick walls communicating with each other. I definitely see the inconsistencies with shielding here. Perhaps the supercruiser was already suffering from decreased shield output so it took less force to breach them?


Should i add this to the [[MAC]] article ? --[[User:Climax Viod|Climax Viod]] 15:27, 3 November 2006 (UTC)
::::Based on the Archer's specifications and relative 'advancement' of human warfare technology and such, I would say the Archer has a pretty low yield, at least when compared to a MAC. But there could be some other factor in here not mentioned already: chemistry. Perhaps the chemical properties of the various warheads and MAC rounds create different situations for the Covenant shielding, so a nuclear warhead could deal more damage to a shield simply because its reacting causes additional strain on the shield. Conversely, the MAC could cause some chemistry to weaken the shielding, dealing more damage than other firepower.


== Are you sure?  ==
::::By the way, if you are familiar with the Romluan Warbird (pretty sure that's it), its most destructive weapon is somewhere on the order of a 52 terawatt beam. Now I don't know how that stacks up to a 1.17 teraton blast yield, but the Warbird is MASSIVE and I would suspect it is because it needs so much machinery to sustain a beam of that wattage. Just throwing it out there. As such, I am led to believe that the propensity for a ship the size of the POA using a single weapon with a 9+ teraton yield, considering how the most powerful nuke ever devised doesn't even begin to compare, is very, very low. A teraton output seems out of proportions, considering how in the 26th century, humanity still drives on wheels and still fires metal at supersonic speeds as their primary weaponry. Sure other advances have been made, but I would think that if we have AI that are practically sentient then we should have more phaser-like technology and hovercars.


http://img130.imageshack.us/img130/3950/poaob1.png
::::PS: don't forget to watch your capitalization. Covenant should be capitalized. <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 18:41, January 7, 2010 (UTC)
Are we really sure this is the right place for the MAc? This image seems like a good place too....--[[User:JohnSpartan117]] [http://installation07.uk.to] 23:27, 28 December 2006 (UTC)


Thats what ive been saying --[[User:Climax Viod|Climax Viod]] 14:46, 4 January 2007 (UTC)
:::::I am familiar with the Romulan ship, presumably you refer to the D'deridex class warbirds, which are, at least based on the designer's intentions, approximately 1300 meters long, larger than most any UNSC ship, slightly smaller than a Covenant destroyer. Fifty-two terawatts is nowhere even CLOSE to 1.17 teratons, as the Tsar Bomba was 5.4 YOTTAWATTS in power output (for reference, tera is 10^12, yotta is 10^24). So there we have it, technology in Trek is far more advanced, yet somehow the halo weapons are tremendously more powerful? I think we can conclude that the MAC yield is improbable. [[User talk:Quakeomaniac|Quakeomaniac]] 18:54, January 7, 2010 (UTC)


Actualy after rethinking this i believe this to be wrong --[[User:Climax Viod|Climax Viod]] 21:08, 14 January 2007 (UTC)
:::::Also, your idea about chemistry is rather interesting. I always looked at energy shields in any universe as just an energy vs energy concept. In halo though, we see plasma weapons doing more damage to shields, and your reasoning of chemistry (could be physics too), makes sense to account for the difference. If you have any more thoughts on chemistry and shields, please toss them out there. I don't know that chemistry can account for a huge huge difference in nuclear and MAC yield, but it could be helpful nonetheless. [[User talk:Quakeomaniac|Quakeomaniac]] 19:06, January 7, 2010 (UTC)


For anyone who still thinks the muzzle is at the three metal plates, check out the picture of the Marathon class:
::::::I used to see shielding as energy vs. energy, or rather a form of energy that was 'solidified' to withstand/absorb other forms of energy on impact. As such, I viewed a shield as a simple solid geometric plane encapsulating a vessel, and was neither penetrable nor malleable. However, hearing how the Covenant shielding was penetrated in a specific area, and recounting various other accounts of buckling shielding and whatnot, my outlook on the standard model of vessel-based shielding has changed. Perhaps the shielding is generated by oscillating specific frequencies around the ship. These frequencies could interact with various types of energy to produce a shielding effect by either neutralizing the incoming energy, or reducing its bite. This setup could potentially allow for many different things to enter an exit the space surrounding a vessel freely, while at the same time blocking damaging energy. If this is the case, then chemistry is more than likely a major component in shield design.
http://img134.imageshack.us/img134/8809/marathonclasscruiserae9.jpg


At first, you may say "The Marathon class has 3 MACs, and there are three distinct metal plated thingies. They must be the muzzles!" But look again. The third plating thingy near the stern would clearly have to shoot right through the second one, making it impossible that the metal plates represent the MAC muzzles. [[User:74.113.238.25|74.113.238.25]] 05:56, 14 April 2007 (UTC)
::::::We see that MJOLNIR shields are easily depleted by sustained plasma fire, and a charged plasma pistol shot wipes them out, no matter how strong. This definitely implies some chemical workings here. For an overcharged shot to completely neutralize an overshield, yet have a much smaller effect as a single shot means that the shields could be overloaded by a high amount of plasma impacting at one moment. This could have some chemical interaction between the shields and plasma. My theory is that shields can neutralize as small amount of incoming plasma, but still allow some of it to reduce the shield integrity. If too much plasma impacts at one moment, then the shield cannot neutralize enough for the plasma to overwhelm the integrity and collapse it.


: Metal plates indicate something that needs protecting, and as MAC openings would need protecting, (You wouldn't want the muzzle to be damaged, have the shell hit the imperfections in the muzzle and damage the ship with the impact, would you?) muzzles for MAC cannons are something that extra armour can indicate on all ships equipped with such. --[[User:DRS Airwolf|DRS Airwolf]] 14:47, 29 May 2008 (UTC)
::::::Now that is not chemistry right there, but chemical interaction could easily occur between the shields (or energy frequencies) and, say, a NOVA bomb. I believe that a MAC round, being a pure kinetic weapon, does not interact with the Covenant shielding in any way other than busting through it. If anything, the speed of the round could create some as-of-yet undiscovered (or unmentioned) form energy to collect up, similar to how a bullet bunches up the air in front of it as it travels. As this bunching of energy nears the shields, it could cause the frequencies or shielding to thin out (or likewise thicken up). A NOVA bomb could work in the same way, and could also create interactions by detonating. The nuclear blast and radiation could interact with the shielding in a detrimental way.


The Bridge isn't even near those plates. Watch the intro to Combat Evolved. The bridge is the box on the forward tier, below the dual guns. The MAC is a tunnel that goes through the length of the whole ship. The muzzle is the forward most tier, in the direct center of the ships bow. You need to remember that these ships are massive. The bridge is relatively small and those plates are too large for it to be protecting that. Besides, if you've read the books, Keyes is always complaing his Bridge is unprotected. My educated guess is leaning towards the plates being used for space docking. MAC guns are protected well, by the ENTIRE hull of the ship. The MArathon and Holcyon Classes aren't exactly the same and differ on dozens of counts. Don't use them as interchangable resources for information. You are all partially correct and partially wrong on all parts. --[[User talk:Spartan-150|Spartan-150]] 15:27, 17 April 2009 (UTC)
::::::And as if all that wasn't enough, it may also be possible that the shielding only stops more conventional forms of energy, i.e. kinetic, nuclear, light, etc., but may actually ''act'' as a semipermeable membrane and allow other forms of energy, possibly those generated form a NOVA blast, to pass through. These forms of energy could interact with whatever it is that produces the shielding and corrupt their integrity.


::::::Whew, this is fun. Lots of stuff to consider when one examines an event analytically and scientifically haha. <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 20:25, January 7, 2010 (UTC)


----
:::::::Hah, yeah you make a great point here, I also enjoy looking at a fictional technology in a scientific way. Who knows, could tell us how it works one day. Interesting though how we went more from a MAC discussion to a shield/star trek (what with the frequencies) discussion though, but it's no problem. I was looking at the energy shield talk page earlier, and RelentlessRecusant posted a neat bit on shield physics, and he made some points that are similar to what you're saying. Would be nice to get him to read over this discussion. You can flip over to that and read it real quick if you want, tell me what you think. The concept on plasma pistols makes good sense, as does the idea of allowing some things (i.e EM energy from shipboard sensors) to pass freely in and out of the shield, while damaging energy (i.e the ships plasma torpedoes) can't, as we see it drop parts of the shield to fire. I can't disagree with what you've said, as it sounds good, and I like the thought in it. [[User talk:Quakeomaniac|Quakeomaniac]] 21:04, January 7, 2010 (UTC)
[[Image:PoAedl.JPG|left|thumb|200px]]
i believe that either of the se woul be the place of the MAC b/c if you look how large the barrel is on the Super MACs, then this would have to be the location b/c the barrel would have to run almost the full length of the ship, b/c if it was at the bottom then it would be like firing a pistol at a blast door considering the amount of power that it would build up when in comparison to a MAC and a covvie cruiser, so it would need a much larger barrel e.g the 2 that are designated i would think it is the bottom of th e2 b/c it looks more barrel like and dark.(i suspect it is the same place on the marathons single MAC as there is no bottom part like the HAlcyons kk cheers,....... [[User:J!MMY8806|J!MMY8806]] 22:04, 14 January 2007 (UTC)


Page 272 of [[Halo: The Fall of Reach]] says "Captain Keyes drifted toward the stern and noticed concealed and recessed 50mm autocannons for defense against single ships. Underneath were bumps-part of the linear accelerator system for the ships lone MAC gun." This implies the MAC to be somewhere around the underbelly. Also, the Super MAC is much longer that a regular MAC, being that a regular MAC is an underpowered Super MAC. A shipboard MAC does not single-shot a Covenant ship.
::::::::Will check it out. However, the overall values of MAC yields still remain unsolved. I did see that they were changed to the gigaton level again, which is more reasonable but perhaps too high. I would need more specific examples of MAC and NOVAs being used in combat to formulate a working hypothesis, as I have not read any of the books (wish I owned them). <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 22:40, January 7, 2010 (UTC)
:--'''[[User:Rotaretilbo|Rot]]'''<sup>[[User talk:Rotaretilbo|Brandon]]</sup> 00:54, 15 January 2007 (UTC)


:Actually, that quote means nothing at all. It doesn't imply that the MAC launch tube is in the underbelly of the PoA, all it says is that part of the acceleration system is located there. I have a lingering suspicion that the only reason ships are designed for a specific length is for the MAC launch tube. After all, why else would the UNSC make all its vessels bilaterally symmetrical and have a straight line from stern bow for placing a MAC tube in? [[User:74.113.238.25|74.113.238.25]] 03:19, 12 April 2007 (UTC)
:::::::::Definitely recommend reading the books, they're great. Haven't read them all myself, but I have read the Nylund novels. I would concur that a gigaton range is still quite a bit too high. I personally feel that anything higher than the very low megaton range is too much, because I'm using HORNET mines as my estimate for the upper limit of the typical Covenant ship (essentially anything but the most powerful vessels i.e assault or supercarriers) shields. One nuclear detonation on the scale of 30 megatons, the yield of the mines, will drop, or come close to dropping, the ships' shields. Now, maybe the EMP effect of nuclear detonations has an effect here, but I can't see it being so huge that a MAC would need teratons of energy to compensate for the lack of the EMP effect. Thus, based on the common occurence of two to three MAC shells to break a shield, and the fact that a nuke in space won't direct anywhere near all its energy upon a single ship, I conclude that the likely yield of a MAC is somewhere in the mid to high kiloton range. But as you said, it's an unsolved mystery. [[User talk:Quakeomaniac|Quakeomaniac]] 03:18, January 8, 2010 (UTC)


i know that, but it would still have to be of considerable size and if it were at the bottom the barrel would run through the centre of the ship in between the lifepods, yes. so it would have to have some sort of damage of them + with the engines bieng as big as they are i suspect a massive drive system for them located behind them so the actual length of the MAC if it was at the bottom would be around 150-400m which doesnt seam like enough room to fit a weapon that is suppose to be able to nuetralize a ships shealds or destroy a UNSC ship in 1, kk just a though thanks mate, [[User:J!MMY8806|J!MMY8806]] 14:42, 15 January 2007 (UTC)
::::::::::After reading your response above, a new theory came to mind. Since a MAC round is purely kinetic, that force could easily be sustained, absorbed, or dispersed, at least somewhat. So my hypothesis is that Covenant shields are able to absorb a significant degree of kinetic energy, but they can only sustain so much. If a MAC round were to possess teratons of kinetic energy, perhaps teratons were absorbed, but a few kilo- or gigatons were leftover, and these penetrated the shields, making a few MAC rounds comparable to NOVA bombs, HORNET mines, and such. This explains ''why'' the UNSC would need a weapon with such a high yield, but leaves the question of ''how'' unanswered. <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 05:32, January 8, 2010 (UTC)


:: Actually, the quote could mean something. A coilgun's acceleration system is placed ''around'' the barrel, and evenly on opposite sides, so if part of the acceleration system reached that far down but the barrel was much further up, it would mean the entire height of the Autumn would be filled with the coilgun's acceleration system, something I highly doubt. As for damage to the lifepods, magnetic material will stop a magnetic field, so just encase the MAC in iron or steel and you have very good shielding so long as the casing is thick enough. Also, the barrel would not be very far across, (I remember 5 or 6 metres mentioned somewhere, probably in another part of this page, but on the Cairo it looks closer to 1 to 1.5 metres, so that needs clearing up by someone.) so the magnetic field inside the coils would be very powerful due to close proximity to them, however, it would be much weaker outside, due to the fact outside is not surrounded by the coil on all sides. Not sure how clear that explanation was, so if it isn't very then to anyone who understands it, feel free to explain better. --[[User:DRS Airwolf|DRS Airwolf]] 14:47, 29 May 2008 (UTC)
:::::::::::Ok.... I'm not 100% sure I follow you on this one. If I'm reading what you said correctly, you're theorizing that the shield is simply extremely effective against kinetic impact, but against something such as electromagnetic radiation (x-rays and gamma rays and the like) released from a nuclear explosion, they can't withstand it as well? This also makes me wonder, based on this... the book seems to indicate that a vessel's shields are split into multiple sections (as we see both Cortana aboard the Ascendant Justice and 'Mantakree's officers aboard the Incorruptible indicate certain portions of the shield failed), and a MAC round directs maximum energy over minimum surface area, much like modern kinetic energy penetrators fired from tank guns, so that the round would direct all energy upon one portion of the shield. A nuclear explosion would disperse its energy over the entire ship's shields (or at least one side). This even further seems to support that the MAC yield is far lower than the article suggets, but at the same time, it does not refute your theory that the shields are simply very efficient at dispersing kinetic hits, much like an elite's shield is versus human weapons. Actually, nuclear explosions, at least here on Earth, create an ultrahot plasma at their hypocenter, which is seen as the characteristic fireball. Now, in space, a nuclear detonation simply releases an enormous amount of high energy radiation, since there's not an atmosphere to absorb it and create a fireball, BUT, the whole idea of introducing the plasma part in atmospheric detonations is to suggest that, since we know shields to be weak to plasma, nuclear explosions may be much more effective against shields, thus allowing a lesser amount of energy, in a different form, to penetrate them. I apologize for the rambling, but new ideas seem to come up quickly. [[User talk:Quakeomaniac|Quakeomaniac]] 06:36, January 8, 2010 (UTC)
:: And also, the Forward Unto Dawn is only around 300m, by estimations I have made on the last H3 level, yet its MAC is still considered powerful enough to be of use. On the Autumn, if we assume where the rear bulge starts is where all engine mechanisms start, and the MAC's barrel ends at the plating, this gives it 500m, perhaps 600m length, around double what the FuD's is. (estimated from the PoA's length being 1.17 km, which can still be disputed) --[[User:DRS Airwolf|DRS Airwolf]] 14:35, 30 May 2008 (UTC)


----
::::::::::::Hey no worries. I know what it's like. I theorize that the shields are not necessarily extremely effective at dispersing kinetic energy, just capable of dispersing a large amount. If a MAC round really did have teratons of energy, then I theorize a Covenant shield would be incapable of preventing all of that energy from penetrating the shield, leaving a few kilo- or gigatons left over that damage the ship's exterior. The shields could withstand some of the force from a nuclear blast, particularly the rushing wave of particles and energy, but against the radioactive side of things, the shields may not be able to block all or any of it.
The Pillar of Autumn uses Magentic Feild Recyclers and Booster Capacitors to fire 3 succive shots with one charge. It does not have 3 guns. Fall of Reach page 275. --[[User:UNSC AI|UNSC AI]] 02:02, 15 January 2007 (UTC)


==Question here==
:::::::::::::Your statement on different sections is definitely interesting. I didn't know that. If the shield is broken up into different powered sections, I would think each section would be stronger overall then just powering a single shield section. This would mean more force can be sustained, and the UNSC would need more force to penetrate. Since plasma energy could be produced via a nuclear explosion in space, and Covenant shielding has been observed to be vulnerable to plasma fire, this could make a NOVA bomb a better weapon of choice against the Covenant, even though it has a small yield. <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 14:41, January 8, 2010 (UTC)


Super Macs are the best defense we have against the covenant... Instead of building all these non-essential weapons like the frigate... Why dont we make ships bigger than Marathon Cruisers that have the capabilities of having enough size to feature something like a Super-Mac Cannon. It's wierd... A fanfiction must be written on this! xD Later. [[User:CaptainAdamGraves|CaptainAdamGraves]] 02:07, 15 January 2007 (UTC)
::::::::::::::Are you suggesting that anytime a MAC round impacts a covenant shield, a small part of the energy makes it through? Like.... that no number of rounds would TOTALLY drop it, but each successive round would do more and more hull damage? Also, the idea of compartmentalized shield sections having more power is a neat idea, as it would allow a shipmaster to divert power to sections of the shield that are vulnerable, and disable sections not in any danger. [[User talk:Quakeomaniac|Quakeomaniac]] 18:10, January 8, 2010 (UTC)


or even better. Put slipspace and regular engines on MAC platforms! :P --[[User:UNSC AI|UNSC AI]] 02:09, 15 January 2007 (UTC)
:::::::::::::::Not quite. In my mind, shields can only take so much battering before they just become useless. Perhaps they still have some effectiveness, but when you consider the fact that the Covenant is getting their posterior whooped by tungsten slugs traveling at nearly half the speed of light, a weak shield isn't going to do much for them. I believe that after so much MAC impacts the shields fail to stop most, if any, of the MACs kinetic energy, so two or three successive shots could punch a hole by deteriorating a shield section. Speaking of sections, I definitely think they are used, especially in Star Trek. The idea of a uni-shield seems ineffective and weak when compared to the advantages of multi-shielding. Over half this conversation should be moved to the shield talk page methinks haha. <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 18:30, January 8, 2010 (UTC)


::or at least strap on some defensive weapons like the standard 50mm point defence guns and archer missiles pods. if they had these then the Athens and Malta would still exist...as would all the brave souls abourde them at the time. [[User talk:Maiar|Maiar]] 06:44, 19 April 2009 (UTC)
::::::::::::::::As for the shield talk page... yeah that would probably be a good idea. Star trek definitely uses sections, in the new movie Pike says "divert auxiliary power from port nacelles to FORWARD shields." I pretty much concur with what you say on shields... now we just need a logical explanation as to HOW the UNSC reactors can produce that much energy, if we're going to go with the why that this enormous conversation created. [[User talk:Quakeomaniac|Quakeomaniac]] 20:23, January 8, 2010 (UTC)


:This is exactly why I dont see this the way Halo is as being how realistically we would be in a balls to walls fight for humanity. Wouldn't we strive for the biggest and best shit possible? Like in world war II, because we became a militaristic based nation, we made the best things. If we become a militaristic race, wouldn't we be into crazy big things? And yes, I dont understand why the MAC-Stations are stationary, its stupid... Grrrr.... [[User:CaptainAdamGraves|CaptainAdamGraves]] 03:11, 15 January 2007 (UTC)
::::::::::::::::I agree. I'll get back and see if I can't move this to the shield talk page. Perhaps someone there will know why a MAC round is listed as such a kinetically powerful weapon. I mean really the force should be calculable by Newton's Second Law (F=ma), so if I can get the mass of the slug and the acceleration imparted on it by the magnetic coils. Given the mass is a large, as is the acceleration (they list it as half of c), I would expect the force to me likewise large, but I would need to convert the force units from F=ma (Newtons) to teratons (or gigatons, kilotons, etc). <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 21:36, January 8, 2010 (UTC)


::Thing of it. putting a Super MAC on one huge ship may seem like a good idea, in theory. but what's the Covenant's first target going to be? they'd blow it out of space before it could even charge the MAC! which i would imagine would take a while! Frigates are smaller, faster, and cheaper to make, which is why they're still used at all.
:Please continue your discussion below. Oh, avoid using the asterisks (*).- <font face="Century Gothic">[[User:Subtank|<font color="gold"><font color="#FF4F00">5</font>əb<font color="#FF4F00">'7</font>aŋk</font>]]<sup>([[User talk:Subtank|<font color="#FF4F00">7alk</font>]])</sup></font> 21:50, January 8, 2010 (UTC)


:::I agree. Also, it would take years (and dont forget the money) to make just 1 of them as a ship. This would be due to the testing of a Slipspace drive powerfull to push an item, atleast over a mile in diamatre. If my calculations are correct, any slipspace engine able to push a super MAC to FTL, would instantly, or almst instantly be blown into subatomic particles. -- {{UserForerunner}} 21:45 19/01/07
::My apologies. I knew I was missing something by using *. It was a : instead. <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 23:07, January 8, 2010 (UTC)


i have an idea why dont the humans get a super mac platform add alot of battleplate, archer missles, a couple of nukes,a reactor,and engines and call it a capital ship? think about it it could destroy any covenant ship while still being able to dodge the plasma torpedos, pulse lasers, and energy projectors the covenant ship could throw at it. After all marathon class cruisers are about the same length as a super MAC platform.  
Please don't take this as an insult, but I'd just like to point out that Newton's second law doesn't mean anything. The physical constant C is a velocity, approximately 3*10^8 meters per second, not an acceleration. The formula you are looking for is that for kinetic energy, E=(1/2)MV^2. By the work-kinetic energy theorem, this formula will account for the forces imparted by the slug anyway. Force and energy (kilotons, megatons, so on are units of energy) are not the same thing, so you can't convert them directly. Just trying to steer you in the right direction. [[User talk:Quakeomaniac|Quakeomaniac]] 22:28, January 8, 2010 (UTC)


:None taken. I forgot that one. I wasn't saying c was the acceleration, just the speed to which the slug is accelerated to. The actual acceleration could be calculated by a=v/t and should be a fairly simple matter. I have never worked with the -ton units before, so I assumed they were force units. However, I have no idea how I arrived at that, considering how this whole discussion has been about energy. But yes, the ΔKE equation will work. Since we need the energy value, I just realized we have no use for the acceleration but to calculate the force as an added bonus. UNLESS...the Covenant shields protect against energy '''and''' force, in which case it could be difficult to discern which of the two properties the MAC slug uses to breach the shields. This could mean that the slug, upon contact with the shield, interacts in such a way that the kinetic energy is transformed into work, and then into force, and it is this force that the shields can only withstand so much of. However, for a slug to damage the ship's exterior, some of the slug would have to travel through and impact the hull, since to my understanding KE cannot be transmitted as other forms of energy could. It needs an object to impart that energy to another object, much the same as sound needs a medium in which to oscillate. <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 23:07, January 8, 2010 (UTC)


:::: Actually, you are wrong, and I daresay, talking out of your ass. How can you make "calculations" about technology which we have no theoretical concept about? Predict what happens through objects travelling through IMAGINARY dimensions using IMAGINARY technology that nobody really understands?. You can't. Besides, large objects are provably able to enter and travel through slipspace successfully: High Charity manages to do without "instantly be blown into subatomic particles." We have been shown no upper size limit on what can travel through slipspace. [[User:74.113.238.25|74.113.238.25]] 03:23, 12 April 2007 (UTC)
I actually think, rather than force, what you may be looking for here is pressure, or how much force the MAC round exerts over a given area of the shield, and the shield thus may have a limit to how much any small portion can withstand, which would make sense. The APFSDS round fired by the SRS99C sniper rifle has a very small frontal area and very high velocity, thus it is able to punch through several enemies at once. In the same way, in the novels, we see MAC rounds leave holes in the hulls of covenant ships (in TFoR this is prominent) but it doesn't do much to disable the vessel, due to their build quality. Thus, the shields may be unable to withstand such a huge force on a comparatively tiny area, just as the hull is. The force exerted is a matter of how quickly the shield can stop the shell, based impulse-momentum. I can see what you're getting at, but consider pressure. The shields also obviously must protect against force, or rather exert a counter force to stop the projectile. [[User talk:Quakeomaniac|Quakeomaniac]] 03:24, January 9, 2010 (UTC)


::::: That point is true. It is stated in the novels that ships are only capable of moving through slipspace BECAUSE of their high mass; in First Strike, the Covenant Spirit dropship is almost shaken to pieces due to its low mass. From various points like this, I believe that the idea is in slipspace, the massier the object is, the more it "stabilizes" the imaginary dimensions, to allow things to exist there. [[User:DRS Airwolf|DRS Airwolf]]
:Gotcha. Pressure definitely is involved, but probably should be considered after we settle just how many tons of energy a MAC round has. The pressure talk should go to the shields page when we can explain/speculate how the Covenant shielding is so advanced and all but can't stop a simple metal slug (even though it is traveling at near-rrelativistic speeds). <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 03:29, January 9, 2010 (UTC)


The thing is MAC Stations use broadcast power to charge thier capacitors--[[User:UNSC AI|UNSC AI]] 21:37, 19 January 2007 (UTC)
I personally think that the simple explanation is just for storytelling purposes. I doubt the authors of the novels considered logic or consistency too much when the books were written. In fact, from what I can see of Halo Wars Genesis on this site, the lone ship at the second battle of harvest withstood a tremendous battering of nukes and MAC rounds. Now, for a while the supercarrier page possessed this information, as it seems people came to the conclusion that by the size of that vessel and its immense power, it must be that ship. However, it could have been a more typical covenant ship, albeit a rather strong one. So, we can't really say for sure who is right, the novels, or Genesis. If it were my choice, I'd say its more likely that Genesis is right, and that covenant ships are probably tougher than the novels let them be. In the novels, human ships can win with reasonable ease. I mean come on, in TFoR, the puny Pillar of Autumn soloed a covenant cruiser 3 times longer than it, the supercruiser, and I consider that highly improbable and retarded, and I posted that on the talk page. Our long conversation here has come up with more interesting ideas about how shields work than about the original topic, the yield of the MAC. I'm going to say that A) covenant ships are LIKELY more durable than they appear in the novels, and B) the MAC is almost certainly less powerful than the calculations from canon info give. Let me know if you agree with that. We can continue talking about shields on that page haha. [[User talk:Quakeomaniac|Quakeomaniac]] 04:19, January 9, 2010 (UTC)


Well it seems the Super-MAC is superior to Covenant weapons so why not make the Super-MAC mobile like Slipspace engines so defending Super-Macs when all is lost can jump to another system like Earth if Reachs Macs woulkd have jumped would have had 320 Super-Macs
:I agree with both of your assertions. The [[Inconsistency|List of Inconsitencies in Halo]] certainly bears testament ot the fact that the novelists and designers did not put a whole lot of thought into synchronization and consitency when they each put together their works. I move that we do some good 'ol physics to calculate the correct energy value. All we need is the mass. We can assume that the velocity is between .4 and .5 c. Using that in the KE equation would give us the kinetic energy, and from their (in the shield page) we could thoerize why it is that one weapon is more effective than another against Covenant shields. (PS I sent you an invite for your consideration) <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 05:18, January 9, 2010 (UTC)


:Frigates and Destroyers are essential to the UNSC fleet because they are fast an maneuverable. The MAC station could not avoid being a primary target. The smaller ships have MAC guns. -[[User:ED|ED]] 19:13, 10 March 2007 (UTC)
:Funny thing is, the 1.17 teraton figure comes from the 600 ton shell stated in the novels and the presumably 40% of C muzzle velocity found in the encyclopedia, which is what started this entire amusing debate... oh what to do now. The velocity is what's likely horribly wrong anyway, because that is what makes the energy so unrealistically high, as velocity is squared in the KE equation, mass isn't. [[User talk:Quakeomaniac|Quakeomaniac]] 05:38, January 9, 2010 (UTC)


:Super-MAC's need ground-based generators, ferrying the energy needed to power the massively powerful MAC's, to operate. how would they carry them around with them? if they were made smaller, they'd take ages to recharge, and by then the enemy's plasma volley will have wiped them out. by far the best method is to stick to smaller, more manoeuvrable, cheaper ships rather than big, unwieldy things that would be obliterated. -- [[User:Specops306|SpecOps306]] 07:12, 8 April 2007 (UTC)
::But the tonnage is ''weight'' not ''mass'', so it must be converted for it to work in the equation. <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 05:41, January 9, 2010 (UTC)
::You can trust me on that one, it is, the SI unit of mass is the kilogram, and there is a conversion factor for tons to kilograms i.e 600 tons is about 544,000 kilograms. I can verify the result of 1.17 teratons is (sadly) what the canon information yields when you bring in physics. [[User talk:Quakeomaniac|Quakeomaniac]] 06:11, January 9, 2010 (UTC)
::Ok so I lied, the result I calculate is .94 teratons or 940000 gigatons, but regardless, that's still WAAAAAAYYY too big haha... [[User talk:Quakeomaniac|Quakeomaniac]] 06:13, January 9, 2010 (UTC)


::thats why they put reactors ON BOURD. like someone up there already said numbnuts. and braudcast power is realy inneficiant so a reactor on the actual station would run better. [[User talk:Maiar|Maiar]] 06:47, 19 April 2009 (UTC)
::I confirm the math. I got 1.37 teratons though. I will try again tomorrow, with more precise methods. I don't grasp the immensity of this energy, so I'll also compare it to energy values I am familiar with. <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 06:30, January 9, 2010 (UTC)


:::I don't know what I said to be called "numbnuts," besides point out the truth. The power requirements for railguns are enormous, and I'm willing to bet that generators for them are kilometers across - you really want to mount that on a capital ship, making it a massive target, possibly spraying any nearby ships with debris and radiation? Then there's manoeuvrability - a ship would have difficulty manoeuvring a weapon that size. As for power transmission, try reading [[Wikipedia:Wireless energy transfer|this article]]. Would running a three-hundred-kilometer long cable between the generator and platform be more efficient? -- <b>[[Halopedia:Administrators|<font color=indigo>Administrator</font>]] [[User:Specops306|<font color=indigo>Specops306</font>]]</b> - <i><b><u>[[User Talk:Specops306|<font color=blue>Qur'a 'Morhek</font>]]</u></b></i> 23:14, November 23, 2009 (UTC)
::I just want to put up a hilarious result I got doing some calculations. If the super MAC can fire a 9.98 teraton shot every 5 seconds, this requires a power supply capable of outputting over 8 trillion gigawatts of power, not to mention doing that wirelessly. Call me crazy, but I'm going to say this is impossible. [[User talk:Quakeomaniac|Quakeomaniac]] 21:04, January 20, 2010 (UTC)


To answer the original question, why doesn't America use M1 Abrams and nothing else? Many reasons. The simplest of which is money.
::A further thing I noticed. The article even states the standard ship based MAC is a 600 ton projectile at 30,000 meters per second, or .0001c. This yields nowhere even CLOSE to 1.17 gigatons of energy, but more like 58.6 kilotons, a FAR more realistic answer. The whole .0001c velocity also implies impossibility for the super MAC velocity of .5c [[User talk:Quakeomaniac|Quakeomaniac]] 23:28, January 25, 2010 (UTC)
Then you have the fact that these MACs take an incredible amount of energy to fire. Then the fact that the slugs they fire are very hard to make. Then you have the fact that the Covenant had found ways around it. If all we had was MACs we'd have to wait to be attacked. We'd  be unable to lure the Covenant away from others. Then you have the fact that would make our troops worthless, leaving them to die on the planet when its glassed. Then, all the MACs on orbital stations draw their energy from groundside reactors. As with Reach, once those reactors go out, the planet falls. Your thinking on this isn't logical. I don't beleive that humanity wasn't dependent enough on MACs, I  beleive they were too dependent.--[[User talk:Spartan-150|Spartan-150]] 15:31, 20 April 2009 (UTC)


The reasons the larger MACs are not built in bulk are many.  For one, these are massive weapons, and as we've seen are very, very tempting targets.  Why waste that many resources on something that's going to be out of the battle in the first or second exchange?  There is also the time constraints to building so many.  Sgt Johnsons said that when he shipped out for basic, some 25 odd years before the events of Halo 2, the platforms had not even begun to be built.  This means that it takes a very, very long time to make even 1 of them, let alone sufficient numbers to compete against the numbers the Covenant could throw. Another reason is energy.  Each Orbital Defense Platform required such a large reactor to charge it, they had to be built on the ground where the energy was transfered into orbit to charge the cannons. Yet another reason is that such a large cannon would require a massive superstructure around it to not only keep the thing from shaking itself apart just by firing, but also to armor and protect it from enemy fire. On the flip side of such large size, it would require massive engines to even get it moving, and because of its mass it would take a rather long time to even maneuver it.  Creating a fleet of Super MAC warships was simply impossible to create at the time of the Covenant war, especially when you had to keep up the fleet to defend against attacks, as well as when shipyard after shipyard was falling to the enemy. Perhaps after the Covenant war, this could be possible, but it would be unwise, as such massive ships are cumbersome, targets for enemy fire, and would be extremely expensive to not only build, but keep supplied, especially on the frontlines.
:::That sounds like it explains it. I have no idea how they came up with the other values then, if the information needed was already in the article. <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 23:30, January 25, 2010 (UTC)


== Not railguns ==
::Ok I just have to throw this out because it's the most hilariously improbable thing I've calculated yet. If you go compute the required acceleration for a projectile to reach .5c within 1336 meters (the length of the ODP), you get but a mere 858 billion G's. I dunno about you, but I feel that would destroy anything ever... haha. Now if you're familiar with mass effect, a game whose warships use a very similar main armament to the MAC, their dreadnoughts (of very similar size to the marathon or halcyon classes) fire projectiles that are a mere 20 kilograms in size at 1.3% of lightspeed, but this not only gives the perfectly reasonable 38 kiloton yield, but the also reasonable 250 G's of acceleration (assuming a 1000 meter ship). [[User talk:Quakeomaniac|Quakeomaniac]] 23:37, January 25, 2010 (UTC)


The MAC isn't a railgun. It's actually a coilgun. There's a difference. I could explain it, but you could also look it up on Wikipedia.
::Oops I lied make that 825 million G for the mass effect ships... hah my mistake. [[User talk:Quakeomaniac|Quakeomaniac]] 23:40, January 25, 2010 (UTC)


Rail Guns are a fast firing Magnetic accelerated bullets ain't they. to this MAC would be like magnetic accelerating cannon shell right? just saying makes sense [[User talk:DeadReanimation|DeadReanimation]] 11:23, 12 July 2009 (UTC)
:::Yes. We now have conclusive evidence and lasting proof that the original MAC yields were impossibly high. I think the article should be changed to reflect your calculated values, and make sure to include proof (the math) so others don't automatically jump to conclusions and think the value is wrong. On the subject of G's, a regular washer cycle spins at about 79G's of centripetal force. Haha. <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 23:42, January 25, 2010 (UTC)


== The Name ==
:::Yes indeed I very much agree. It's about time we brought this insanely long topic to a close. However, because I don't want a bunch of insane flamers coming after me for betraying the halo bible (the encyclopedia), I'll leave it up to an administrator (preferably) or another editor to make the changes if it is seen as desirable. I appreciate all your input to the discussion Orion. [[User talk:Quakeomaniac|Quakeomaniac]] 23:55, January 25, 2010 (UTC)


Many people call this the MAC cannon. When MAC stands for Magnetic Accelerator Cannon, why do people add a "cannon" after it? They are technically calling it "the Magnetic Accelerator Cannon cannon". I could rant on about how they call it the MAC gun also, but I seem to have reached my point. -Blemo 02:50, 5 April 2007 (UTC)
::::I can understand that. People these days...it was agreeable talking to you as well. Hopefully this lengthy discussion will end up bettering this community. <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 00:13, January 26, 2010 (UTC)


:It's like the La Brea Tar Pits, literally meaning "The The Tar Tar Pits." It's weird English stuff that doesn't make sense. --<b>[[User:Dragonclaws|<font color="000000">Dragon<font color="FF0000">c</font>laws</font>]]<sup>([[User talk:Dragonclaws|<font color="000000">talk</font>]])</sup></b> 05:09, 12 April 2007 (UTC)


:: Or an ATM Machine. (Automatic Teller Machine Machine.) Just go with it.
“Quakeomaniac does have a point, if not to point out the inconsistencies of Halo. The Covenant shields do seem to possess different outputs and strengths, as many different weapons of different yields can be used to tear through their shields. A teraton range does seem unrealistic if a megaton warhead is enough. I would think that ships armed with MACs would have little trouble against Covenant ships. Aiming would be the hardest part. Can you be more clear on your 1.2 Petaton assertion? That seems like an AWFULLY large yield for a mere nine warheads, even if they are fusion.  
As for Star Trek, yes the stuff is impossible, but the creators hired scientists, physicists, and other experts in the field to literally invent futuristic devices, sights, concepts, and technology that was not only futuristic and cool, but also scientifically possible, meaning we as the modern human race could produce it or find it given the proper resources. Everything on that show is something that could theoretically exist (can't speak for the new movie).


When you speak of the Sahara, do you say "Sahara"? Or "Sahara Desert"? Sahara means desert. Its the same logic. People simply add things to the simpler names to reaffer what they're saying. If you know nothing about Halo, would you know the MAC is a Cannon? Or would I have to tell you?--[[User talk:Spartan-150|Spartan-150]] 15:24, 20 April 2009 (UTC)
1. The 1.2 Petatons is a low using the Inverse Square Law for the shattering of the moon (see the NOVA bomb page). In the end each of those nukes is 1/900th the yield of the NOVA.


== Numbers ==
2. ALMOST NOTHING IN STAR TREK IS SCIENTIFICALLY POSSIBLE. This is the show that has blacks holes with cracked event horizons, Super Nova that can wipe out a large area of the galaxy, and were half an ounce of Anti-Matter can blow half the atmosphere off an M-class planet. Only a very few things in ST are possible, hell the book “The Physics of Star Trek” evens says most of the stuff is impossible.


I was looking at the page, and it says that the Super Magnetic Accelerator Cannon is "capable of accelerating a 3000 ton ferric-tungsten round to 40% the speed of light, or 179 875 474.8 kilometers/s (74,512.9 miles/s)."  Since this is neither the correct number nor the correct magnitude, I thought that I should point it out.  The speed of light is 299 792 458 meters/s or approximately 300 000 000 m/s.  40% of this number would be 120 000 000 m/s or 120 000 kilometers/s.


“I appreciate you taking the time to consider what I said Orion rather than just call me an idiot with a bunch of nonsense. Regarding the inconsistencies, here's an interesting one. The page for the covenant carrier states it can withstand 3 MAC rounds (not sure where that comes from, I'll just take it for now). Yet, the supercruiser in TFoR also took 3 MACs and a bit more (the archers) to drop its own shields. This implies that the carrier and supercruiser, two drastically different sized ships, have roughly equal shields. Makes little sense. This could perhaps be rectified if we knew the yield of an archer missile relative to a MAC round, but we assume its low based on the book. As for the guy who doesn't bother to sign his comments: Yes, this is sci-fi, thank you captain obvious. This does not prevent a meaningful discussion of it. As far as canon, that's the whole point I'm making, nothing agrees. As for the supercruiser, can you tell me where I mentioned the archer missile part? The GoO assertation doesn't need comment. Also the NOVA bomb is nowhere near a normal nuke, and the technology used in it is NOT used in the reactors on ships, which is what powers the MAC. And I'm not trying to state the SMAC can't fire every five seconds, merely that its energy usasage (if it's a 9+ teraton shot) is unrealistically enormous. Anyway, please consider what I said and try to have a meaningful discussion on it rather than insult me.”


Odd. I was going through the Halo: Fall or Reach paperback, and on page 283, the Super MACs accelerated "three-thousand ton projectiles" to "point four-tenths the speed of light". I see that not as 0.4C, but as (0.4/10)C, or 0.04C.
I have. I am sorry if I insulted you, I was just in a hurry to get that posted was all. I meant no offense.
--Some Sci-Fi guy
6-27-2007


:It could be useful if someone with the books or whatever could find the reference where it gives the muzzle speed of the 'standard' MAC (currently 0.1 c in the article). If the SMAC is 0.04 c then some very interesting things start happening once one plugs in the numbers.  Namely: the SMAC produces slightly less KE than the MAC, but about 2 times the momentum.  (That would imply something about Covenant shielding too, no?)  On the other hand, if it turns out the MAC is only, say, 0.01 c then everything works out to the original expectation (i.e. that the SMAC is heads and shoulders above the MAC in all ways.) [[User:74.99.140.28|74.99.140.28]] 20:04, 27 June 2007 (UTC)
1. It may have been because the Super Cruiser was low on power from firing the Energy Projector at the moment.


2. Not only that Keyes wanted to get the PoA away from the ship because he was afraid that even at a distance I believe in the hundreds to thousands of kms here thought it could damage the ship which gives a very high yield.


I would tend to think that it's actuall 0.01C, not 0.1C, since while a shipboard MAC is linked to the power systems that drive the ship (it has to share juice with sensors, propulsion, life support, etcetera) a Super MAC just sits there and blows the crap out of things. Of course, there's always the possibility that Nylund meant either "four tenths" or "point four", but seeing that he's a good writer and the books are pretty much error-free, I'm sticking with Nylund actually meaning .04C
3. We must also note that an Archer missile was able to chase after for a few seconds a Covenant ship going 100,000 KPH, so I’m surprise they put a warhead on since the KE would be in the MT range.
[[User:75.61.142.8|75.61.142.8]] 00:23, 28 June 2007 (UTC)


Were did the shipboard MAC numbers come from? What page, of which book? The only thing that I remember from reading the books was that in “The Fall of Reach” page 107
4. As I said before sorry. But in Sci-fi things that just shouldn’t be possible happen like with ST. Also. You didn’t mention Archer missiles, I was just pointing out that the 3 MAC rounds and 500 or so Archers downed the shields.
“The MAC - Magnetic Acceleration Cannon - was the (ship’s) main weapon. It fired a super-dense ferric tungsten shell. The tremendous Mass and velocity of the projectile obliterated most ships on impact.”
The exact weight and speed was never stated as far as I can remember.


I was re-reading "The Fall of Reach," on page 108, after the first description of how a MAC works, the velocity of the projectile is given as 30,000 m/s which is 0.01% the speed of light.  However, I have not been able to find a reference to the mass of a MAC slug in FoR.  "Contact Harvest" page 119 gives the mass as 160 metric tons.  Given that the ship in "Fall of Reach" was a frigate and Contact Harvest is set in 2525, its possible that larger, more powerful MACs like the one mounted on the Pillar of Autumn could fire a 600 ton slug, but I just can't find the actual reference and it's bugging me. So if anyone remembers could you help me out by posting here or adding a citation to the main page?  Thanks
5. The NOVA Bomb is stated to be made up of 9 fusion warheads that have the yield increased a hundred fold, meaning that each nuke making up the NOVA has 1/900th the yield of the NOVA bomb going off.


==AIMING !!!!==
6. Lets look at high yields and ship ranges and stated speeds from the games and books now, shall we?


How the hell would you aim a MAC? you must have to turn the whole starship because the round travels the lengh of it, like an Bull-pub assault rifle --[[User:Climax Viod|<b><span style="color: Red">Climax-Void</span></b>]] [[Image:Hammer sickle.png|35 px]] <sup>[[User talk:Climax Viod|<b><span style="color: Black">Chat</span></b>]] or [[Special:Contributions/Climax_Viod|<b><span style="color: Silver">My Contributions </span></b>]]</sup>
A. Halo:CE when the PoA fusion reactors goes off the fireball is over a thousand kilometers across giving it a yield of 100+ Teratons.


I was also wondering this, maybe it has small thursters kinda like the shuttles or the ISS use to keep in the proper orbit? I remember in Fall of Reach a part where the orbitals re-oriented themselves and blasted covie dropships heading for one of Reaches poles but it didnt say how they maneuvered. Oh and btw its bull-pup not bull-pub;)
B. Halo:CE the Longsword on fusion power is able to cross 20,000 kilometers in 90 seconds.


In Fall of Reach, the ship that Keyes used before the Pillar had some king of emergency thursters, or something among those lines. So, I agree that the platforms may have some kind of thrusters to allow it to aim at enemy ships.
Both of these examples would be impossible with real-world fusion. Continuing now:
About the ships... Well, basically, yes, you would have to manuever it to aim at the covenant ships. The lenght of the barrel has its problems, and the lack of a alternative in the aiming system reduces the tactical capabilities of the ships.
[[User:Felix-157|Felix-157]] 17:51, 4 June 2007 (UTC)


: The "emergency thrusters" were nothing but tanks of high explosives strapped to the side; designed to ram the ship out of the way of incoming projectiles, as it was used for in Fall of Reach. But it is true that the ships have to maneuvre their entire length to aim, unless some of them have a limited ability to shift their MAC cannon inside.
C. Halo 3 the Covenant are able to in a short time with a small fleet uncover the 108 km Ark Portal in hours.
: But aiming this way is not much of a problem; due to inaccuracies with slipspace exits, UNSC craft will have their exit target at least 1 astronomical unit (look it up on wikipedia) from all known large objects in the system, as they can sometimes exit 1 AU away from their target, and they do not want to exit inside a planet or a star. Due to this, ships may leave slipspace 2 AU or more away from their destination (due to other planets pushing them even further away), yet no-one ever complains about the long journey to their destination. As such, it can be safely assumed that the UNSC has developed extremely fast engines by Halo's time, and these engines can be used for maneuvres as well as going forward. --[[User:DRS Airwolf|DRS Airwolf]] 09:24, 29 May 2008 (UTC)


The MAC gun's aiming is quite simple, in reality.  Every human ship before the reverse engineering of Covenant technology would have microthrusters mounted everywhere along the hull, very similar to what current spacecraft use in that they use compressed air to push on that area of the ship.  Mostly, these would be called maneuvering thrusters, and nowhere near the power of the emergency thrusters, or the main thrusters which power the ship.  The size of the MAC basically makes the entire ship into one massive gun, which means the entire ship will have to turn on a direct line toward the target area.  I say 'target area', because in most instances both the human ship and its intended target will be moving, and at the ranges these weapons are mostly used, this would mean you would have to lead the target enough to place each round on target.  As for the round travelling the length of the ship, this is unknown, as the actual length of the MAC's barrel has never been defined for any ship.  You would need a long barrel to propel the round at the speeds it reaches, but until actual figures are given, there is no real information about barrel length.
D. Halo 2, once the Covenant fleet has entered the effective range of the SMAC stations even the ships are firing which supports a higher speed for the round then the silly 30/km second round that crossed 3,000 kms in seconds from TFoR.


== 3000 ton shell? ==
E. Page 8 of TFoR a Covenant fleet of only 36 ships removed the oceans and atmosphere of a planet in 1 hour which gives us Teraton range yield.
In Halo: the fall of Reach, the 20 orbital MAC guns that defended Reach fired 3000 ton uranium shells but Cairo station is an obital MAC gun and in the big room where the anti-matter bomb is, you see the uranium shells being loaded into the cannon but the shells are about as big as the Chief so how can they be 3000 tons? [[User:Halofan|HДĿΘFáṆ]] 18:03, 4 July 2007 (UTC)


F. We also have the Captain of a UNSC frigate state his ship can do 80 million KPH which also puts it above real-world fusion.


I was thinking that a few weeks back, perhaps there are differnt types e.g. armour piercing? --[[User:Climax Viod|<b><span style="color: Red">Climax-Void</span></b>]] [[Image:Hammer sickle.png|35 px]] <sup>[[User talk:Climax Viod|<b><span style="color: Black">Chat</span></b>]] or [[Special:Contributions/Climax_Viod|<b><span style="color: Silver">My Contributions </span></b>]]</sup>
G. FS a the AJ-Gettysburg is able to pull around 6400 Gs when it accelerates across 10,000 kms in 18 seconds or so which gives us just under a Teraton for engine output there.


Depleted uranium is ~19,000 kg per cubic meter. That means one cubic meter of depleted uranium could supply over six MAC shells. Forgive me, but I believe the proper argument is the shells were made too big, not too small. [[User:P03 James|P03 James]] 06:36, 3 November 2007 (UTC)
H. Halo 3 the FuD is able to cross a greater distance in a similar amount of time to the Longword in Halo:CE.


It's 3000 tons, not pounds though. Since I'm not sure which ton it's referring to I'll provide all three.
It seems to me even parts of the game agree with low GT to low TT firepower.{{Unsigned|207.200.116.136}}
3000 U.S. tons is 2,721,554.22 kilograms, which would require 1.4323 cubic kilometers. 3000 UK tons is 3,048,140.7264 kilograms, coming to 1.60428 cubic kilometers. 3000 metric tons is 3,000,000 kilograms, comes to 1.5789 cubic Kilometers


Some massive scale errors there - the size is actually 157.89 cubic meters, or a 5.4m * 5.4m* 5.4m cube. The shell seems to be about the right size.[[User:Mutoid Chief|Mutoid Chief]] 11:46, 1 April 2008 (UTC)
:Mr. Anonymous User 207.200116.136, are you asserting that Star Trek is for the most part impossible? Secondly, I'm unclear what you're getting at with your post. It looks like you're backing us up by bringing more inconsistencies to the table. Is this correct? <small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halopedian.com/User:orionf22 <span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag <span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 03:06, January 26, 2010 (UTC)


Wow...this is getting confusing. allow me to summurise. Depleted Uranium has a density of about 19,100 kg per cubic meter. It is probobly safe to assume that the writers used american tons (~907 kg) so 3,000x907kg = 2,721,000kg, 2,721 metric tonnes devided by 19.1 t/m3 = ~142.5 m3...hang on...i may have made a mistake, someone please identify. Gunnery-sergeant [[User talk:Maiar|Maiar]] 08:33, 17 April 2009 (UTC)
:To begin with, I always thought of Star Trek as one of the universes that tried to be accurate. Possible today? No. A lot of Star Trek though doesn't really violate the laws of physics, but at the time it was made, these things, like antimatter, were not nearly so well understood as today. Incorrect numbers I will give them a break for. I also don't know what you're trying to say. Please back up what you have said with some sources, as I have no idea where you're getting a lot of this, and I'm familiar with all but the two newer novels. I'm not trying to necessarily say you don't have any argument, but please indicate where you found this. The one part I can safely comment on though is the supercruiser. Why would a ship be designed so that it could not fire its weapons without draining its own shields? Halo Wars Genesis and Legends (I think) depict a battle with a SMALLER covenant ship being tremendously harder. I seriously doubt low on energy is a realistic reason if the ship fired one shot. After all, it fired 5 at once earlier. [[User talk:Quakeomaniac|Quakeomaniac]] 17:48, January 26, 2010 (UTC)
 
I agree with Mutoid Chief. Logically.--[[User talk:Spartan-150|Spartan-150]] 15:21, 20 April 2009 (UTC)
 
== Recoil ==
Would it be possible to find out how guns deal with the recoil? I mean, because of Newton's third law of motion (for every action there is an equal and opposite reaction), the firing of a MAC cannon would cause the ship to accelerate backward at 0.1c, and an orbital defense platform would shoot toward the planet's surface at 0.4c, thereby rendering the guns more hazard than help. '''''PLEASE''''' respond!
 
 
Coil-guns, and therefore MACs, suspend and propel their projectiles magnetically. There is no recoil at all.
~Greenroom
 
Exactly. No propellant is burned, the MAC is for all intents and purposes a giant tube with electromagnets running down the side of it. Once powered up, these magnets draw the projectile towards itself, and when the magnet is powered down, inertia carries the projectile to the next magnet. In the microgravity conditions of Earth orbit, slow-down would not be a factor to hinder speed. -Atlas503
 
: All guns produce recoil.  This is the whole Conservation of Momentum thing.  (On a tangent, reaction engines can be regarded as very powerful guns.  The principles that make them work are exactly the same.  This is why really powerful mass drivers can theoretically be used as engines.  Not very efficient though.  As a corollary, really powerful engines can be used as weapons.  See the Kzinti Lesson.)  With things like projectile mass, acceleration, and speed being equal, coilguns and railguns do produce less recoil than your normal deflagration gun simply because they don't have to worry about additional recoil being generated by the exhausting propellent gasses.  But make no mistake: MACs will produce recoil.  So why don't UNSC ships and stations go barrelling 'the other way' when they fire the big one?  Chalk it up to fancy magical devices like 'inertial dampeners' or somesuch. [[User:Meco|Meco]] 03:20, 27 September 2007 (UTC)
 
It is not a gun, in the traditional sense. Consider it as a bunch of ring magnets drawing a huge metal slug. How would it cause recoil? -Atlas503
 
:Again: conservation of momentum.  The method used to accelerate the mass is irrelevant.  [[User:Meco|Meco]] 19:45, 7 October 2007 (UTC)
 
Meco is right, throwing a 3000 ton slug out of a barrel is going to cause recoil. The only way I can see to get past this is either by having the station use the orbital tether as a backstop, having powerful engines on the bottom of the station, or having a floating barrel. Personally I think that the engines or floating barrel are most likely. --[[User:Bravo Kilo|Bravo Kilo]] 18:53, 25 October 2007 (UTC)
 
Pardon me for interjecting, but I believe I have something useful to add to the conversation. I believe the reason why ships and orbital stations don't go backwards at 0.1c when they fire their MAC rounds is because of the differing weights. Using an example of a destroyer, consider this: A ship-scale MAC fires a 600 ton shell at 30 km/sec. This works out to be 1.8 billion newtons of force to fire the shell. 3rd law of motion, the shell pushes back at 1.8 billion newtons, however, because destroyers are ~4,000 tons, this only works out to be 450 meters/sec on the destroyer, which can be countered using chemical rockets or by accelerating the ship to a greater speed before firing. The bigger problem that I can see, is how the ships handle the instantaneous backwards acceleration of 450 meters per second, without crushing the crew against high G forces. Any thoughts? [[User:P03 James|P03 James]] 03:04, 2 November 2007 (UTC)
 
:Forgive me, I was in error. I was off by an order of magnitude, I should have typed 18 billion newtons of force. Also, the destroyer is 8,000 tons, not 4,000, meaning the 3rd law of motion recoil from a MAC shell must be 2,250 meters per second backwards acceleration (Assuming they do fire at one-tenth the speed of light, which could be in error). So that is a serious problem, in terms of both still having forward acceleration (particularly when destroyers are mentioned as having two MAC guns firing simultaneously), and how the ship's crew survives the instantaneous acceleration. [[User:P03 James|P03 James]] 06:42, 3 November 2007 (UTC)
 
:: I believe that the figure for standard MAC shells has been accepted at .01 c, rather than .1 c, so I believe your original figure of 1.8E9 N is correct. As for how the crew survive, consider the fact that in original Halo, first level, there is gravity. Halo 2, first level, there is gravity. And both of those maps are in space, aboard UNSC vessels. I believe from this that the UNSC must have developed some form of gravity generator, which could counteract it. Another solution would be having an equivalent mass fire in the other direction at the same moment, counteracting the push, though stopping this mass without having it slam into something and create the same backwards push is another story. Perhaps have several masses at a lower speed, and slow them down at an even rate along the ship's length, spreading out the backwards force over time to allow the engines to counteract it? --[[User:DRS Airwolf|DRS Airwolf]] 14:05, 29 May 2008 (UTC)
 
I know next to nothing about all of this... However, I think the point that some of the others were making was that conventional weapons use some sort of explosive to ''push'' a projectile forward at high speeds, when the force hits the projectile, that third law causes the force to reflect backwards a bit, causing the recoil. The MAC, from what I can gather uses extremely powerful magnets to ''pull'' the projectile, which... wouldn't really produce any recoil in a standard sense. Honestly, have no idea how that would work with the whole action/reaction, thing and my description could be wrong, but that's how I saw it.
 
In GoO the Spartans had their jet packs fire bursts to compensate for weapons fire while on zero gravity missions, the same thing could work for a ship. They could fire a huge burst from the engine as the MAC fires. -- [[User:Smothmoth|Smothmoth]] 05:32, 30 January 2008 (UTC)
 
You can observe a MAC firing on Cairo station. Whenever it fires, the massive metal block drops down from the top of the gun. I suppose its movement compensates for the recoil. [[User:Mutoid Chief|Mutoid Chief]] 11:55, 1 April 2008 (UTC)
 
Can somebody please explain why there is a muzzle blast when a MAC fires. The reason that appears around guns is because the gunpowder is exploding, but with a MAC gun, there is no gunpowder, or anything else explosive in the barrel, so there should be no blast. Is this just some liberty that Bungie takes, or are we missing something here? [[User:D1134|D1134]] 00:42, 24 October 2008 (UTC)
 
:Maybe its some kind of epic sonic-boom. [[User talk:Maiar|Maiar]] 06:34, 19 April 2009 (UTC)
 
He is correct, it would be a sonic boom, even though the Pellet passes the speed of sound before it even leaves the barrel, the opening into space (space is a vacuum) would suck out all particles from inside the barrel, which keeps the sonic boom from happening internally and blowing apart the barrel.--[[User talk:Spartan-150|Spartan-150]] 15:18, 20 April 2009 (UTC)
 
== Logically speaking ==
 
If we use .5 * m * v^2 = energy (which works well for projectiles traveling less than half the speed of light.  It gets progressively worse as one approaches c), then the energy of a Marathon Class's cannon is 115.4 gigatons.  Logically, you'd expect the orbital defense stations to have more powerful guns, considering the fact that they ''need'' support from power plants on the planet, and are much larger, with longer barrels. 
 
If we use v = .04c, we get the result that the orbital defense station is just as powerful as the Marathon's cannon!  Does this really make sense? 
 
If we use v = .4c, we however get the yield of 10,000+ gigatons.  Too powerful?  Perhaps.  Perhaps not.  The orbital defense platforms can take out a Covenant battlecruiser in a single hit, yet Marathon class cruisers (with a vast array of missiles and atomic arms) must works in groups of 3+ to take out a Covenant battlecruiser. 
 
The .4c velocity seems to work well with other canon information, and it can be explained in the context of the dialogue by saying that the "tenths" and "point" were added for redundancy. Why else would you try to mesh two systems together?  Consider this analogy.  You're driving a car, and I say "Go slower.  Slower".  Taken literally, this means to reduce the rate at which you are going slower.  But the use of slower twice is clearly just redundancy. 
 
He was probably just saying "point 4 tenths" because he wanted to make the placement of the decimal clearer, and harder to misinterpret. 
 
As for the issue of action-reaction (the basis of recoil), let's remember why these laws work.  When two cars collide, the electrons on the outside of their atoms are repelling, pushing both of them backwards.  It is an "equal and opposite reaction" because a magnetic field exerts an equal force on both electrons. 
 
The coilgun doesn't cause an action-reaction in the way that a gun does.  The bullet and the gun don't literally touch when they push off of each other.  But let's remember that when the coilgun propels its projectile, there are magnets pulling on the projectile.  When the magnets pull the projectile forward, the projectile pulls the magnets backward.  So yes, there is recoil. 
 
How does station deal with recoil? That's hard to say.  Its possible that they're extremely massive, and the recoil only pushes them off slightly.  But I find this hard to believe.  There's quite a bit of force required to push a projectile to nearly half the speed of light. 
 
It could be said that the orbital defense station has a little "towboat" that pulls it back out every so often using slip space (where apparently its easy to travel fast)
 
: Slight correction; it isn't easy to travel fast in slipspace, however, travelling a certain distance in slipspace equivalates to a much greater distance in normal space. --[[User:DRS Airwolf|DRS Airwolf]] 14:29, 30 May 2008 (UTC)
 
Now of course this violates conservation of energy, since one could just take a rock at the surface of the Earth and keep slip spacing it to orbit, then let it fall. The rock would keep gaining velocity as it travels towards the Earth, but where would that energy come from? 
 
I have an idea that perhaps a ship must put some energy out to travel into slip space, which would solve the conservation of energy issue.  Perhaps that's why Regret's ship made such a mess of Mombassa when it tried to slip space away.  Perhaps it had to put in energy to go into slip space.  Perhaps that's why Mombassa looked like it had been wrecked after the ship went into slip space. The matter in the city was converted into gravitational potential energy by E = mc^2
 
But this last part is just my speculation...
 
: Not directly relevant to this bit of discussion, but I'm mentioning it because it's a point that needs clearing up; Regret's ship made a mess of New Mombasa because slipspace entry is not entirely stable. In fact, far from it. Putting it in words from somewhere in the novels; (but I do not remember where) entering slipspace is tearing a rip in space-time. You expect that to leave the area around nice and clean? Cortana does mention in Fall of Reach that the Covenant slipspace technology is far more advanced than the humans, and is more like easing out of normal space, but we must remember Cortana is an AI far more intelligent and capable than any of the Covenant AIs or navigators, and as such the Covenant might not be able to use their slipspace drives so neatly. --[[User:DRS Airwolf|DRS Airwolf]] 14:29, 30 May 2008 (UTC)
 
== MAC Yields ==
 
I took the liberty of erasing the garbage relating to MAC yields. Apart from being horrendously sourced, the sections removed also featured blatantly incorrect numbers.
 
1. Stated that FoR puts Shipboard MAC speeds at 30,000 km/s. This is false. FoR states 30,000 METERS per seconds, a full order of magnitude lower.
 
2. Calced the yield of the SHipboard MACs using the above figures to be around 50 gigatons (50,000,000 kilotons). The actually figure would be closer to 70 kilotons.
 
3. Stated that Super MACs accelerate projectiles to 0.4 percent of lightspeed (0.4 c). This is false. THe exact quote is "point four-tenths the speed of light", which is erroneous grammar, but taken literally translates to (0.1 * 4/10), or 0.04 c.


4. Calced the yield of the Super MACs to be 5 or so TERATONS (Extinction event in extremis). Actual figure would be closer to 50 Gigatons.
orionf22@ I can agre that some things in ST are possible, but we have thngs like their ships having 64 MT torps, and yet in DS9 and yet we are told The Die is Cast that in 6 hours they would have stripped a planet down to the core. Voy we have the cracked EH, an FTL super nova etc. We have the new movie with the Black Hole creating Red Matter, the SUPER NOVA OF SUPER DOOM that blew up a large section of teh galaxy...at FTL speeds. Trust me, ST is anything but possible, and less consistent then Halo.


Please, don't delete that stuff. ''Change'' it, instead, or we lose a lot of work, regardless of whether it's right or wrong, that someone put effort into. '''[[User:Specops306|<font color=purple>Specops306]]</font>''', '''''[[User talk:Specops306|<font color=blue>Kora]]</font> [[Special:Contributions/Specops306|<font color=purple>'Morhek</font>]]''''' 07:27, 21 March 2008 (UTC)
And what I am getting at with my post is that the low MT to KT range makes no sense when you look at a lot of the shown feats, even the games support me in some cases.


I understand your concern, and note that I DID take the effort to simply edit the correct numbers in. However, the calculations as to the yield in tons of TNT that were included previously seemed somewhat tangential, and I'm almost certain I've seen similar or identical quotes on message boards such as stardestroyer.net (one of the sources for those passages, conveniently enough) and spacebattles.com. Fan calculations just don't strike me as entirely reliable, hence why I just kept the corrected numbers from The Fall of Reach instead.
Quakomaniac@ Not really, you can see some of what I posted above. Still, the shows are good.


If what Morhek said here is true then why in the Flying hell is there a statement stating that the average shipboard MAC's has a yield of 1.17 Teratons? Also since my books are indisposed at the moment, could someone check and see if the Orbital MACs fire their 3000 ton shell at 150,000 '''kilometers''' a second (or 1/2 the speed of light) or if it's really 150,000 meters a second cause the difference is large. --[[User talk:Zervziel|Zervziel]] 19:17, December 9, 2009 (UTC)
F is just before the Covenant ship jumps off the bow of teh Commonwealth in TFoR. So between Pg. 100 and 110. Also note that Spartans could chase after the Covenant ship that was moving at 100,000 KPH.


A quote from pg.316 of The (Holy) Halo Encyclopedia!
G is from FS when they are in the Slipspace bubble fighting the Covenant fleet.


MAC GUN
On the Super Cruiser, the AJ-type ship was shown in GoO during the battle above the second ring to lose power to most systems as I recall.
The weapon just appears to be a massive power hog.
On the 5 shots, are you talking about when it took out the 5 UNSC ships? Because that was just one shot that took out all 5.


The Magnetic Accelerator Cannon [MAC] Gun is one of the  
The only reason I support the TT yields is because of the Encylopedia and what the Covenant can do with a full scale glassing.
largest [and best] weapons that the UNSC has in its fleet.
Utilizing thousands of magnetic relays, it can ram a 600-ton
projectile at nearly forty percent the speed of light. *Skiping stuff about slow reload time and battle of Reach*


VARIANTS
I would be happy with the low GT yields for the Ship MAC since that would also fit with the 50 GT SMAC. Also, sorry for any spelling errors, but my PC is a bit slow right now so I can't really go back and check at this time.


STABILZED VARIANT: The "Super" Mac or "Big" Mac is five-hundred percent larger than the ship-based original and is capable of firing a 3,000-ton slug at nearly half the speed of light. Due to its size, a Super MAC can only be stationed on planets or orbital weapons platforms.
Ok so anyway, with regards to the supernova to begin with, did they ever mention how long that supernova had been unfolding? A large star exploding is a danger to everything in a very wide radius. It's not that improbable. Red matter is a plot device, yes, oh well. It was a good movie regardless. Low MG to KT range makes perfect sense too. Think of this. Is it not indeed true that a 30 megaton HAVOK warhead will drop most ship shields? How in the world could you then require multi gigaton MAC shells? Not to mention, the MAC round directs ALL its energy upon one target. Energy from a nuclear explosion is dispersed spherically from the point of detonation. Most of it will not hit the target ship. As for ships going whatever speed, 80 million kph you seem to indicate, its space. The ships are in continuous motion all the time. I seriously doubt they ever come to a full stop. Plus, 80 million kph ''relative to what''? I can't verify the part from first strike, I don't have the book with me. As for the supercruiser and 5 beams... go read the book again. It is definitely stated it's 5 beams. I DO remember that. As for the glassing business supporting the TT yields... please give me a calculation to back that up. [[User talk:Quakeomaniac|Quakeomaniac]] 14:18, January 27, 2010 (UTC)


: The variances in MAC energies and Nuclear energies with respect to completely destroying shielded vessels could be explained by the properties of Plasma shields. The problem seems to be with why high energy MAC rounds do not penetrate the shields of a Covenant vessel while relatively low yield Nuclear devices seem to completely annihilate the vessel, despite problems such as the ship moving relative to the detonation, the inverse square law and Irradiance. The thing about plasma, is that the more energy you pump into it, i.e. the more it becomes ionised, the more viscous (thick) it becomes. This has the effect of impeding the movement of matter through it. So if the Plasma shield around the Covenant vessel is of sufficient energy, then ARCHERS and MAC rounds will be stopped. So why does those nuclear explosions have such an effect? It is because plasma shields do not stop particle beams and EM radiation. As someone pointed out above, in a vacuum, there is no gas, so therefore there is nothing to absorb the energy from the thermonuclear reaction. In an atmosphere however, most of this energy becomes thermal when it is absorbed by various gases, creating, like someone stated above, a fireball. All energy is therefore released as EM radiation in a vacuum which would penetrate the shields and hit the ship. The fact that EM rays travel so fast with respect to the ship (c) makes the ships motion , and therefore the inverse square law, negligible. EMP would also get through. [http://en.wikipedia.org/wiki/Plasma_shield Read this also]. I may be missing other factors, however, someone on the [http://halopedian.com/Talk:Energy_Shields#RE:_RE:_Shield_physics Shield discussion page] gave a very plausible explanation as to how exactly shields work and how plasma is so effective against them. --[[User talk:Anton1792|Anton1792]] 23:02, August 6, 2010 (UTC)


Ship MAC round at 40 PSL = 1.17 Teratons of TNT.
== MAC yields ==


SMAC round at 50 PSL = 9.98 Teratons of TNT.  
I'm setting this up because I want people to find the relevant data quickly enough without having to read through those long posts. So in a clear, concise manner, could someone please tell me what the yield of a MAC blast is, because the 50 kiloton range that's pasted on the page is simply pathetic not to mention inconsistent with the data the pertains to the 600 ton projectile moving at 40% the speed of light and a measly 50 kilotons is the yield?--[[User talk:Zervziel|Zervziel]] 04:13, March 13, 2010 (UTC)
:The Encyclopaedia had it at 1.17 teratons, Halo: FoR had it at 1.17 gigatons and [http://halo.wikia.com/index.php?title=Magnetic_Accelerator_Cannon&diff=969266&oldid=967844 user calculations had it at 58 kilotons]. Teratons is far too unrealistic, whereas gigatons is far more acceptable and the user calculation is questionable. Oh, note that this applies only to the standard MAC. [[User:-Ascension-|<span style="font-family:Century Gothic; color:#000000;">{insert name</span>]] [[User talk:-Ascension-|<span style="font-family:Century Gothic; color:#000000;">here}</span>]] 04:44, March 13, 2010 (UTC)


So has the holy Lords of Bungie spoke in this book so it shall be!
First off, sorry for this being in the wrong topic area.  Doing this from my phone and don't want to scroll thru all that.  Plus I don't want to mess any formatting up.
[[User talk:ProphetofMercy|ProphetofMercy]] 06:35, December 10, 2009 (UTC)
Anyway, a theory about shields that I've heard is that shields are made up of either alternating layers of magnetically held hot and cold plasma, or that they are made up of a single layer of cold plasma.
This would explain why weapons-based plasma - which is very hot - would be more effective against shields, as it would burn through them like butter, while a single cold slug would flatten against them (plus it explains the term "buckling").
We know that ship-based plasma weapons are controlled magnetically, so they have the projectors.
What do you think?
[[User:Zero-G_Mako|<font color="blue" size="2px">Zero-G_Mako aka Orodum</font>]] 02:42, March 15, 2010 (UTC)


== dino crater ==
:Except the MAC slugs aren't cold at all. In fact they're rather hot. As for the shields, that really makes no freaking sense. Cold plasma wouldn't stop a MAC slug.--[[User talk:Zervziel|Zervziel]] 05:24, March 15, 2010 (UTC)


I just wanted to add this because I think it's probably the best way to prove that 1.17 teratons is completely retardedly impossible. We know that halo vessels use deuterium/tritium fusion reactors to power their systems. If you look it up, a single reaction produces 17.6 MeV of energy, but only 3.5 of that is really usable (the rest is a neutron that isn't of much use). If you crunch some numbers, you find that to generate 1.17 teratons worth of energy would require about 80,000 tons of fuel. So... if we believe the marathon class masses a hundred thousand tons, that must mean it can shoot at most once and 80% of its mass is fuel. Unlikely, and stupid. Conclusion: MAC shells have nowhere near that much power, more likely is a few hundred kilotons, low megaton max. This debate has gone on forever I know it, but hopefully this is enough to prove the encyclopedia wrong. If you want realistic numbers, go read Mass Effect's codex (for those who play it.) [[User talk:Quakeomaniac|Quakeomaniac]] 20:43, April 22, 2010 (UTC)


in case anyone is wondering about my math, here it is:
==Note on kinetic energy calculations==
I noticed that both in the main article (as a footnote) and in here people are calculating the kinetic energy of the projectiles. I won't bug you with more calculations, just one simple note.
If a body's speed is a significant fraction of the speed of light, it is necessary to use relativistic mechanics to calculate its kinetic energy. The equation used here and in the article was cited as <br><code>Ek = (1/2)*m*v<sup>2</sup></code><br> Whereas, since the projectiles are moving at a significant fraction of the speed of light, you need to use <br><code>Ek = (m*c<sup>2</sup>)/(sqrt(1 - (v/c)<sup>2</sup>)) - m*c<sup>2</sup></code><br> I'll leave the math to the rest of you, but rest assured, it makes a significant difference.
[[User talk:ZenonSeth|--Z.S.--]] 07:04, August 11, 2010 (UTC)


.5(3048140.7264)(11991698.32)^2*
:I'm pretty sure there was little actual science used to arrive at that figure... I mean seriously? '''''1.17''''' teratons? It's obvious that the writers came up with the idea in one of their meetings to incorporate the "117" meme into the article by kludging together a set of figures that would sound impressive. Unfortunately they used the wrong equation to do it, because they're writers, not physicists. [[User talk:DJenser|DJenser]] 13:24, 27 July 2012 (EDT)


this equals about 2.2 x 10^20 (22000000000000000000) kJ.  the astroid was about 5x10^23kJ and the largest bomb detonated was the Tzar bomb at 2.1x10^17 kJ
== Railguns ==


*3000 tons = 3048140.7264kg and .4/10 the speed of light = 11991698.32
Should we have a separate article for railguns, seeing as they're featured in at least a couple of different instances; the twin side guns on UNSC Frigates, the LRG Rail Gun on the Wolverine and the base turret. Just so that there would be no confusion between railguns and MACs, plus, we have articles on less significant subjects. --[[User:Jugus|<font color="MidnightBlue"><b>Jugus</b></font>]] <small>([[User talk:Jugus|<font color="Gray">Talk</font>]] | [[Special:Contributions/Jugus|<font color="Gray">Contribs</font>]])</small> 15:20, August 16, 2010 (UTC)


== Speeds are wrong ==
:We should. Railgun and Coilgun are two different mechanics/operation of fire. For basic info to others about the differences between coilgun and railgun, [http://ca.answers.yahoo.com/question/index?qid=20090628213458AABcVhO see this]. - <font face="Century Gothic">[[User:Subtank|<font color="gold"><font color="#FF4F00">5</font>əb<font color="#FF4F00">'7</font>aŋk</font>]]<sup>([[User talk:Subtank|<font color="#FF4F00">7alk</font>]])</sup></font> 15:29, August 16, 2010 (UTC)


MACs don't fire rounds at 40% the speed of light - if they did then hitting a target at 100,000 kilometers wouldn't be a problem, the round would hit in less then a second. The standard MAC fires slugs at 30,000m/s and the Super 12,000km/s. Also, PoA's MAC isn't stated to fire slugs any faster then a standard ship, and is also said to fire smaller rounds, so where the .1c and 600 tons comes from I'm not sure. Harvest mentioned 160 ton metric ton rounds, which could be the smaller rounds in question.
::I also think creating a railgun article would be prudent. Like Jugus said, the UNSC use railguns quite extensively. Yeah, there's the Cobra and the automated turret. However, if a mere frigate has five pairs of twin-linked railgun turrets, larger vessels would likely have more. Although they obviously aren't the kind mounted on frigates, the ''Spirit of Fire'''s deck guns look much more like huge railguns than MACs. I think the UNSC's use of Gauss-style weaponry tends to overshadow their use of railguns. --[[User talk:Braidenvl|&quot;Government big enough to supply everything you need is big enough to take everything you have.&quot; -Thomas Jefferson]] 15:48, August 16, 2010 (UTC)


== MAC Firing ==
== Just sayin.... ==


If it uses magnets, then why is there always a large blast coming out of the top of cairo station when it fires. I think the stations may use a shell w/ propelant.
Since when did the standard MAC go from 1.17 gigatons to 1.17 teratons? That 1000 times stronger and about enough energy to kill every living thing on this planet. And as far as im conserned, the UNSC shot the Forerunner Keyship ''multiple ''times and not really anything died...and if one of these hit a Covenant ship the shields wouldnt really help much since the ship and others would be vaporised. Dont get me started on the SMAC...what Im saying the yield should be in gigatons not teratons.


A Gauss Cannon on a M12G1 Warthog generates a muzzle-flash effect, so why wouldn't a Super Mac gun, too?
[[User talk:Omgsauce|Omgsauce]] 20:07, August 22, 2010 (UTC)
Also, try using this to help with Calculations: [http://www.sciencemadesimple.com/conversions.html].--[[User:Phazon Blade|Phazon Blade]] 20:31, 27 August 2008 (UTC)
When the Mac guns fire, theyy use massive amounts of energy to work. That energy is going in the same direction as the projectile. The energy doesnt just disipate, it comes out of the barrel.


I did a little research, and found a picture of a naval test of a MAC weapon on the Railgun Wikipedia page - http://upload.wikimedia.org/wikipedia/commons/thumb/d/d3/Railgun_usnavy_2008.jpg/250px-Railgun_usnavy_2008.jpg
:I'm pretty sure the Encyclopedia messed up the figures. The standard yield went from 1.17 gigatons to teratons and the velocity from 0.4% (or 4%, not sure) to 40% the speed of light. Numbers like that don't really make sense, considering that would make the MACs far more powerful than anything the Covenant has, and would require Covenant shield technology to be ridiculously powerful to withstand a MAC impact. --[[User:Jugus|<font color="MidnightBlue"><b>Jugus</b></font>]] <small>([[User talk:Jugus|<font color="Gray">Talk</font>]] | [[Special:Contributions/Jugus|<font color="Gray">Contribs</font>]])</small> 19:30, August 22, 2010 (UTC)
The muzzle flash consists of hot plasma behind the projectile, created by the extreme magnetic fields. [[User talk:Zero-G Mako|Zero-G Mako]] 20:51, November 23, 2009 (UTC)


:Coilguns and Railguns are NOT the same thing. That picture is not useful for what a MAC firing would look like. Also, there shouldn't be anything like a blast or the like in space since it is a vacum (so there would be nothing to light up. I am unaware of any sort of flash in air with a coil gun, though I have not researched it. --[[User talk:Ashfire908|Ashfire908]] 15:52, January 26, 2010 (UTC)
::"''Since when did the standard MAC go from 1.17 gigatons to 1.17 teratons? That 1000 times stronger and about enough energy to kill every living thing on this planet.''" Not to dig up a dead thread, but it should be noted that the yield of a MAC round is about 1% of the energy generated by the asteroid that helped wipe out the dinosaurs 65 million years ago... Even so, that impact, by itself, wasn't enough to wipe out '''''all''''' life, but with the addition of other, smaller impactors striking other areas, & the bow shock of the initial impact triggering massive volcanic eruptions in India which lasted some 800,000 or so years, it still only managed to kill off less than 20% of all families of organisms in existence. Another factor to consider is that, while it wasn't traveling at near-relativistic speeds, this meteor was nearly 7 miles in diameter and had enough mass and velocity to cause significantly more environmental damage than a single MAC round, or even a SMAC round. As was demonstrated by the 3 frigates that fired on the Keyship in the Halo 3 level "The Storm", even multiple volleys of MAC rounds weren't enough to cause more than localized damage to the surrounding area because they lacked sufficient mass of their own to impart more energy to their impacts.[[User talk:DJenser|DJenser]] 12:54, 27 July 2012 (EDT)


::To Ashfire: Your first statement is correct. Your assertion about there being fire in space is also somewhat correct. In certain conditions, an explosion could be seen. This could happen if a round penetrates the hull and causes the ship to vent atmosphere. The escaping gases would linger long enough for a very brief explosion to be seen before dispersing throughout the local space. I'mm not sure about plasma in a MAC round's wake...could be plausible if the fields and air friction combine to superheat and ionize the surrounding air to extreme temperatures. You bring up a good point about vacuums: on Cairo Station when you exit to battle the Elites in jumpjets, there should be absolutely '''no''' sound, as the vacuum gives nothing for sound to oscillate off of.
== Encyclopedia figures ==


::To the others contributing in this section: the MAC does not use propellant to accelerate the projectile; it uses magnetic fields and coils. See the little video clip at the top of the MAC article. That's the principle at work here. As for energy dissipation, some of it can be dispersed through vents in the gun's path, much the same as gases are dispersed in modern day weapons. However, some energy will inevitably come out of the barrel, and this could produce a flash depending on the chemical structure of what exactly is exiting the barrel. If it's just pure energy (like electricity for example), then it will more than likely remain invisible to the naked eye. A Gauss has a flash because it operates in an atmosphere, thus the chemicals and effects at work in coil/railguns are visible. In space, the 'rippling' effect generated by a Gauss cannon may be be visible, but may not, depending on what exactly generates it. My guess is that the heat and energy generated by firing creates this appearance. As such, it would be visible in space, but the flash more than likely would not. [[File:Lieutenant Grade One.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 17:24, January 26, 2010 (UTC)
Could we all agree that since the MAC velocities given in the Halo Encyclopedia: The Definitive Guide to the Halo Universe don't make any sense and are contradicted by other sources, we can just ignore them? We've done that with a lot of other errors in the book, yet the "40% the speed of light" one keeps persisting here. The problem is, a velocity like that is quite literally impossible if we are to believe what we've seen in the fiction so far. The MAC's effects on Covenant vessels are proof that the rounds simply can not be traveling at relativistic speeds. For example, in ''Reach'', an orbital MAC gun fires a round through a Covenant corvette. If the round was traveling at the speed presented by the Encyclopedia, the corvette would've been pulverized and the impact on the ground would've likely caused a planetary-scale disaster. That alone is enough to confirm that the figures in the Encyclopedia can't be valid. In fact, I wouldn't be surprised if the makers of the Encyclopedia took that figure from Halopedia like they clearly did with countless other things, resulting in many of the errors.


== Power ==
Also, just for clarification, is "point four-tenths" 4% or 0.4%? The smaller the figure is the more it makes sense here. --[[User:Jugus|<font color="MidnightBlue"><b>Jugus</b></font>]] <small>([[User talk:Jugus|<font color="Gray">Talk</font>]] | [[Special:Contributions/Jugus|<font color="Gray">Contribs</font>]])</small> 09:19, 21 October 2010 (EDT)


Using the equation Force = Mass x Acceleration I have calculated a rough number for the power behind a Super MAC. Assuming the weight of the shell is 3 000 metric tons and the acceleration is 11991698.32m/s then we get a number of 3.597509496E+13 in Newtons.--[[User talk:L55|L55]] 03:35, 14 February 2009 (UTC)
:For the reasons you have stated, and the general f*cked-upness of the Encyclopedia, I agree that  we REALLY should ignore those figure.[[User talk:Infernal-Blaze|Infernal-Blaze]] 15:26, 31 October 2011 (EDT)


== Large Hadron Collider ==
Also, isn't "point four-tenths" really 0.04%? Four-tenths is 0.4, right? So Point four-tenths is 0.04, correct? [[User:ScaleMaster117|ScaleMaster117]] ([[User talk:ScaleMaster117|talk]]) 16:53, 9 June 2013 (EDT)
Has anyone else noticed the Large Hadron Collider (L.H.C.) uses the same technology as a MAC cannon? [[User talk:Dreaddraco2|Dreaddraco2]]


:Actually, it doesn't. The MAC is a simple railgun, using magnetic strips to accelerate a metal projectile. The LHC is a particle accelerator. -- <b>[[Halopedia:Administrators|<font color=blue>Administrator</font>]] [[User:Specops306|<font color=blue>Specops306</font>]] - ''[[User Talk:Specops306|<font color=purple>Qur'a 'Morhek</font>]]'' <sup>''[[w:c:halofanon:Operation: HOT GATES|<u><font color=blue>Honour Light Your Way!</font></u>]]''</sup></b> 01:10, 11 June 2009 (UTC)
:Apologies for bumping an old discussion. As per above comment, which one is correct? — [[User:Hacame|<span style="color:#6699FF; font-family:Futura; font-size:14px; font-weight:bold;">Ha</span>]][[User talk:Hacame|<span style="color:#6699FF; font-family:Futura; font-size:14px; font-weight:bold;">came</span>]] 11:11, 30 July 2013 (EDT)


The particles are Magnetically Accelerated, if you turned the L.H.C. into a cannon, it would techniqually be a magnetic acceleration cannon. [[User talk:Dreaddraco2|Dreaddraco2]]
== MAC velocity ==


:As per Specops. Also, the MAC can only go in a straight line, and cannot fire individual particles. The LHC is curved, and does not have an opening at the begining or end, but keeps going round. It also cannot fire anything larger than several particles. <span style="font-family: Palatino Linotype;"><b>[[User Talk:ONI recon 111|<font color="blue">General</font>]] [[UserWiki:ONI recon 111|<font color="#red">ONI</font>]] [[w:c:halofanon:Category:ONI recon 111|<font color="light blue">recon</font>]] [[User:ONI recon 111|<font color="green">111</font>]] - </b> [[Image:General.svg|30px]]</span> 15:27, 15 June 2009 (UTC)
I got a question. I've re-read Fall of Reach and the 30 km figure comes for a Frigate.  No where else does it say a MAC fires at 30 km for Cruisers or Destroyers (though they are likely the same).  We know the length of a Frigate MAC, and if the Halcyon-MAC is considerably bigger and longer than the Frigate's.  Should not the 30 km figure apply only for the Frigates while Cruisers fire the rounds faster? {{Unsigned|Lord Hierarch}}


== Ship-mounted MAC recharge time ==
:I interpreted Commander Keyes' opinion in the beginning of Chapter 16 as to imply that there is only one standard MAC system and that it functions the same (i.e. the same velocity) in all ships (the way he "reminded" critics that a destroyer sports two MACs whereas a frigate could only sport one). Also, Lt. Hikowa commented that the Autumn is able to fire three shots in a single charge because of the booster capacitors attached to the weapon, not because of the Autumn's classification or of its size.— <span style="font-size:16px; font-family:OrbitronMedium;">[[User:Subtank|<span style="color:#FF4F00;">subtank</span>]]</span>  12:48, 19 July 2012 (EDT)


The page says the main drawback to ship-mounted MAC cannons is the extended recharge time.  However, it doesn't specify just what the recharge time isCan anyone tell me what it is? [[User talk:Tophvision|Tophvision]] 17:08, 13 August 2009 (UTC)
::Well a Destroyer isn't that much bigger than a Frigate.  Presumably they would use the same type of MAC.  MAC size.  Length.  What I meant for the Autumn was that if the 30 km is only for the Frigates and Cruisers fire their rounds faster than 30 km, then the Halcyon would fire rounds with a bigger yield.  [[User talk:Lord Hierarch|Lord Hierarch]] 20:22, 19 July 2012 (EDT) Lord Hierarch


Also, what's the source for the claim that ship-mounted MAC cannons have a yield of 5 megatons?  Someone on the discussion page said the cannons more properly have a yield of 70 kilotons, significantly lower. [[User talk:Tophvision|Tophvision]] 21:32, 13 August 2009 (UTC)
:::Maybe. I'll amend the article accordingly.— <span style="font-size:16px; font-family:OrbitronMedium;">[[User:Subtank|<span style="color:#FF4F00;">subtank</span>]]</span>  19:33, 26 July 2012 (EDT)


Interestingy, I calculated the mass and acceleration stated for shipboard MAC cannons to get the yield.  It came to 1.56e11 joules, or only 37 kilotons.  Do I have my math wrong, or is something seriously wrong with the stated yield of 5 megatons? [[User talk:Tophvision|Tophvision]]
== Mini Mac on the Mammoth should be added to the railgun section ==


Correction:  1.56e11 joules is just 38 ''tons'' of TNT, not even kilotons. Something's inconsistent here[[User talk:Tophvision|Tophvision]] 02:27, 14 August 2009 (UTC)
I know they call it the minimac in the game but its not a coilgun its a rail gun which operates on completely different principals..  Just my opinion {{Unsigned|Spartan Matt}}


Okay, I did my math wrong, the yield with the given numbers is correct, BUT I've read that the speed for MAC cannons is 30,000 meters per second, or 30 km/s, not 260 km/s. What's the source for the 960,000 kmph number? [[User talk:Tophvision|Tophvision]] 16:00, 14 August 2009 (UTC)
:If the guide refers to it as a miniature MAC, or more accurately, coilgun, then it stays a coilgun. --[[User:Xamikaze330|Xamikaze330]] ([[User talk:Xamikaze330|talk]]|[[Special:Contributions/Xamikaze330|contribs]]) 01:03, 12 November 2012 (EST)Xamikaze330


General5 7, please don't just revert the edits, but actually PROVE THE NUMBERS. You do know that part of the page beforehand was honest about the MACs being 30 km/s, and the SMACs being 4% lightspeed?  One's right, one's wrong. TFoR says 30 km/s is right.  What's the source for the higher number?  [[User talk:Tophvision|Tophvision]] 01:59, 17 August 2009 (UTC)
You hear Cortana call it a rail gun in-game, though.[[User talk:Spartan Matt|Spartan Matt]] 21:40, 13 November 2012 (EST)
:It's a common mistake that happens all the time in popular culture. --[[User:Jugus|<font color="MidnightBlue"><b>Jugus</b></font>]] <small>([[User talk:Jugus|<font color="Gray">Talk</font>]] | [[Special:Contributions/Jugus|<font color="Gray">Contribs</font>]])</small> 00:53, 14 November 2012 (EST)


== Barrel diamater of a MAC gun? ==
==Sorry Folks Teratons is canon==
Even the most recent reprint of the Encyclopedia states the teratons is canon.{{Unsigned|Councilor 'Rumilee}}
:That's like saying the [[List_of_inconsistencies_in_the_Halo_series#Halo_4_2|Pillar of Autumn is a frigate]] as (re)confirmed in the [[Halo 4 Game of the Year Edition|recent version of ''Halo 4'']].— <span style="font-size:14px; font-family:Arial;">[[User:Subtank|<span style="color:#FF4F00;">subtank</span>]]</span>  18:03, 19 February 2014 (EST)


I have very poor math skills, so could somebody help me out? Judging from the size of a MAC gun for a Frigate, what would somebody skilled in math say is that diameter of the gun? I think it would certainly be bigger then a 16 inch gun on a Iowa-class battleship. Could somebody also give me an estimate for the Super MAC as well? I'm trying to put together a personal project and need help.
:The Encyclopedia reprint still retains the bulk of the original's errors. Anything in that book should be applied with extreme discretion, and only if it doesn't contradict with anything else. It's safe to say the ridiculous MAC yields are not one of those things. --[[User:Jugus|<font color="MidnightBlue"><b>Jugus</b></font>]] <small>([[User talk:Jugus|<font color="Gray">Talk</font>]] | [[Special:Contributions/Jugus|<font color="Gray">Contribs</font>]])</small> 23:16, 19 February 2014 (EST)


== Information on the "Super Mac Cannon" ==
That's not an error though.  The two MAC round measures are in line with each other (.4c for ship mounted ones and .5c for SMACs)  I don't like it, but most recent canon figures outrank old ones.  Although I don't like that it says teratons, I do prefer that the SMACs are only around 8-9 times more powerful than ship mounted MACs rather than thousands and thousands of times more powerful.  Its even a 117 reference, 1.17 teratons.  That seems to be an intentional measure.  [[User:Councilor &#39;Rumilee|Councilor &#39;Rumilee]] ([[User talk:Councilor &#39;Rumilee|talk]]) 11:06, 20 February 2014 (EST)


http://halo.wikia.com/wiki/Orbital_Defense_Platform
:The FoR provides that ship-mounted MAC (for Paris-class frigates as of 2525) fires slugs at 30 km-per-second. This figure was bumped to .4c (or 40% of the speed of light) in the Encyclopaedia, despite what was stated in the novel. Oddly enough, FoR also provides that orbital SMAC fires slugs at "point four-tenths the speed of light" (of which the community interprets as .04c or 40% of the speed of light). This figure was bumped to .5c (or 50% of the speed of light) in the Encyclopaedia, despite what was stated in the novel. The initial figures/yields are retained in the 2010 reprint of FoR, contrary to what was stated in the Encyclopaedia.
:When there is inconsistency between material sources, it is up to the editors to reasonably decide which source is correct and why the other is incorrect. Personal preference aside, it is obvious that the Encyclopaedia was wrong in its figures/yields. A glaring error. Then again, it's not surprising: the content in the Encyclopaedia [[Halo_Encyclopedia#cite_note-8|has been acknowledged to be a mess even by 343i staff]].— <span style="font-size:14px; font-family:Arial;">[[User:Subtank|<span style="color:#FF4F00;">subtank</span>]]</span>  12:35, 20 February 2014 (EST)


Before the Covenant invasion of Reach, there were 20 of these super Mac Cannons, if you follow the link I put in you can find sufficient information on the orbital defense platforms.
::Although it's awkward phrasing, "point four tenths" would be 0.04% or 4%, not 40%. A tenth is 1/10 or 0.1. Point-four is 0.4. Four tenths is also 0.4. But, "point 4 tenths" is moving the decimal two places to the right. Again, awkward phrasing, Nylund... -[[User:ScaleMaster117|ScaleMaster117]] ([[User talk:ScaleMaster117|talk]]) 12:54, 20 February 2014 (EST)


== unrealistic ==
== Halo Encyclopedia: The Definitive Guide to the Halo Universe MAC recharge time? ==


I don't know a lot about the math of the mac guns, but, i do know there energy yield. Standard macs=1.17 teratons, super macs=9.98 teratons. 1 teraton is about all you need to wipe out all life on earth, yet, in halo wars, the mac blast which is somewhat less powerful, can fired 15 meters from infantry without out harming them? I understand its less powerful, but just guessing, i believe the energy would be AT LEAST 20 kilotons, the same amount of energy of the bomb dropped in Hiroshima, which would vaporize everything near. Someone care to clarify?
Does the Halo Emcyclopedia say anything about recharge time of a teraton MAC? Because it could be for several days for all we know. {{unsigned|Oni execute order 66}}


1. One Teraton of TNT is nowhere near what you need to wipe out all life on Earth. For ref. you have the dino-killer which was in the area of 50-100 Teratons of TNT yet only wiped out 65% of species alive at that time.  
:Firstly, please don't add comments to archived talk pages. Discussion takes place on the current pages, archived pages are to remove clutter without deleting previous discussions.
:Secondly, if you're referring to the high output weapons like on the Cairo, Athens and Malta, we've established that the firepower involved is simply impractical, the result of an error somebody made. The actual output would be in the gigatons range. Secondly, I doubt it. The Cairo had an extremely high rate of fire, estimated at one round every thirty seconds, or two rounds per minute (if memory serves, those figures might be off though). I also doubt that rate of fire is related to how much damage it can do, especially when it's linked to a ground-based generator facility. A big enough generator can allow an enormous rate of fire, like what we see over Earth in Halo 2. The only limit would be maintenance for the magnetic rails/coils. Not to mention that UNSC MAC technology got a shot in the arm when they equipped the Pillar of Autumn with an improved system - by now, those improvements could/should be fleet-wide. -- [[User:Morhek|<b><font color=indigo>Qura 'Morhek</font></b>]] [[halofanon:user:Specops306|<u><i><font color=blue><sup>The Autocrat</sup></font></i></u>]] [[User talk:Specops306|<u><i><font color=purple><sup>of Morheka</sup></font></i></u>]] 20:13, 9 March 2014 (EDT)


2. The MAC of the SoF is cleary firing underpowered shots to avoid killing its own troops and the fact you also have this thing called game mechanics for the troops within 15 meters not being harmed.  
::Not certain what you mean here. Cairo Station was observed firing MAC rounds in 5-second increments, full load to fire time to recharge. -[[User:ScaleMaster117|ScaleMaster117]] ([[User talk:ScaleMaster117|talk]]) 22:09, 9 March 2014 (EDT)


3. If you have a problem with the stated yield take it up with Bungie on the stated speeds of the MACs in the new Halo Enc.  
:::These are the tricks that memory plays on you when you haven't been able to play the game for years. Thanks for the correction. -- [[User:Morhek|<b><font color=indigo>Qura 'Morhek</font></b>]] [[halofanon:user:Specops306|<u><i><font color=blue><sup>The Autocrat</sup></font></i></u>]] [[User talk:Specops306|<u><i><font color=purple><sup>of Morheka</sup></font></i></u>]] 04:09, 10 March 2014 (EDT)
The math puts a 600 ton round at 40% the speed of light at 1.17 Teratons per shot, and the recently corrected yield for the SMAC which I made a mistake on is correct at the stated speed of nearly 50% of c. 


[[User talk:ProphetofMercy|ProphetofMercy]] 08:07, November 22, 2009 (UTC)
::No trouble, was just confused. From loading to firing is 5 seconds I believe. Then another five to recharge to fire again. I extracted the audio sequence for a full firing and pieced them together for a future article about Cairo Station. If I could link it to some Flash animation it would be sweet but I'll see where I'm at then. -[[User:ScaleMaster117|ScaleMaster117]] ([[User talk:ScaleMaster117|talk]]) 07:10, 10 March 2014 (EDT)


:I would assume that's from Halo Encyclopaedia.- <font face="Century Gothic">[[User:Subtank|<font color="gold"><font color="#FF4F00">5</font>əb<font color="#FF4F00">'7</font>aŋk</font>]]<sup>([[User talk:Subtank|<font color="#FF4F00">7alk</font>]])</sup></font> 11:43, November 22, 2009 (UTC)
== Super MACs AND Series 8 mac guns ==


It killed nearly everything but the sea life, i also stated ''about'' enough energy to kill everything on earth.{{Unsigned|Omgsauce}}
One more thing that needs to be added to the supermac section is that the Punic Class Super Carriers are armed with Supermacs as well two of them to be precise and also does anyone know which is more powerful the series 8 macs of The infinity or Super Mac platforms.  I believe its the series 8 Macs as they seemed to be the only mac guns that did damage to mantles approach but I could be wrong. Can Supermacs rounds go clean through an covenant assault carrier and super carrier as well


1. Yes, it is from the Encyclopedia.
== Hypervelocity ==
Firstly, I would encourage separating [http://www.halopedia.org/index.php?title=Magnetic_Accelerator_Cannon&curid=832&diff=1155568&oldid=1154043 the bulk of this edit] as a note at the bottom of the page. Secondly, we don't know that the UNSC hasn't simply found found some way to offset the effect. This is five hundred and forty years in the future, in a fictional universe, and it would hardly be [[Ross-Ziegler Blip|the most]] [[Neural physics|outlandish]] [[Geas|scientific]] [[Mind transfer|claim]] in this universe. -- [[User:Morhek|<b><font color=indigo>Qura 'Morhek</font></b>]] [[halofanon:user:Specops306|<u><i><font color=blue><sup>The Autocrat</sup></font></i></u>]] [[User talk:Specops306|<u><i><font color=purple><sup>of Morheka</sup></font></i></u>]] 01:50, 19 December 2015 (EST)
:Hi. I made that edit. Three things:
*One, it ''is'' in a note at the bottom of the page.
*Two, none of the tech displayed by the UNSC would allow us to logically infer that they can somehow ignore hypervelocity physics. You can't offset the effect; this would require them to be literally magic, with the ability to alter the laws of physics on the spot, a la the prime Flood. Either that or UNSC coilguns actually use eezo from Mass Effect and encase each slug in a mass effect field of blue space magic, which is also never suggested anywhere; we know how MACs work, they're just coilguns which fire tungsten slugs. Even if they could somehow make their slugs behave like non-hypervelocity projectiles, which they can't, all that would do is ''decrease'' effectiveness, not increase it; a squash, vaporization, and "explosion" causes more damage than a clean penetration.
*Three, it's not just the lack of hypervelocity impacts that suggests a velocity significantly lower than 30 km/s; TFOR:TAS, Halo 2: Anniversary, and Halo Reach, among others, all contain scenes of MACs being fired with velocities of only a few km/s at most, and Halo: First Strike even refers to a typical MAC slug as "supersonic" (between Mach 1 and Mach 5). This can all be handily explained away by one simple extrapolation that fits with what we see and what we're told about how the MAC actually operates.
--[[Special:Contributions/68.107.65.53|68.107.65.53]] 21:52, 19 December 2015 (EST)


2. Yes, but my point is that 1 Teraton of TNT is not nearly enough for what you claimed otherwise the Dino-killer would have killed everything if 1 Teraton was just short of what you needed.
:I didn't notice the  fact that it was already in the notes, I just read through the edit comparison, so I do apologise. And I have to reiterate, while your explanation makes perfect sense, this is a fictional universe set in the future, created largely by people who are not experts in these fields. I would ask for clarification on this point from an official source - GrimBrother, or Catalogue, for example. -- [[User:Morhek|<b><font color=indigo>Qura 'Morhek</font></b>]] [[halofanon:user:Specops306|<u><i><font color=blue><sup>The Autocrat</sup></font></i></u>]] [[User talk:Specops306|<u><i><font color=purple><sup>of Morheka</sup></font></i></u>]] 23:32, 19 December 2015 (EST)


[[User talk:ProphetofMercy|ProphetofMercy]] 03:18, November 23, 2009 (UTC)
::Actually, Eric Nylund has a master's degree in chemical physics, so he actually does know what he's saying. You could just write it off as an error, but again this shows up in four separate books (TFOR, GoO, First Strike, and Evolutions) written years apart by a guy who probably knows what a hypervelocity impact looks like, ''and'' it's supported by other comments in those books such as MAC slugs being referred to as "supersonic". So I'm extremely skeptical of the idea that no one involved in the creative process had any idea what they were actually writing (e.g., by writing a slug penetrating cleanly through the ship, Nylund was writing it as travelling at less than 1.7 kilometers per second). But even ignoring that, I don't think I'm making a leap here; it's not even really an extrapolation, now that I think about it, and is certainly far less of one than just declaring that hypervelocity physics don't exist in Halo with no evidence of such a thing. Slugs fired from coilguns which explicitly have the ability to dial down velocity (based on the Reach commentary) in exchange for a faster firing rate (seen in TFOR, where they can be fired with less than 100% power), are repeatedly seen being launched at speeds far below their potential maximum (the tungsten slugs not vaporizing on impact puts a hard limit on their velocity, even ignoring all visual scenes of MACs being used). Simple reasoning based on their known capabilities then dictates that, if the slugs are going at below their maximum speed, and the guns are firing one every few seconds, then less power is being put into each shot. If anything it seems more questionable to just list the 30 km/s velocity as their standard velocity without also noting that, beyond a single occasion in TFOR, slugs never travel that fast anywhere (well, besides the Encyclopedia :D), either in the books or in visual media (games, movies). Similarly, outside of one battle, MACs never seem to need that much time to recharge their shots...
I don't actually have an account with which I could contact GrimBrother or official 343 employee, and would prefer not to make one with the sole intent of asking a single lore-related question. If someone else could ask one of them  "when MAC slugs visibly trail across the screen at a few km/s rather than 30 km/s (as they did in that one scene in TFOR), and behave like projectiles traveling at perhaps 1 km/s rather than hypervelocity (in all battle scenes in the books), and don't take several minutes to get out a second shot, is that because the MAC gunners are just firing with less than 100% charge in exchange for a faster firing rate, or did Nylund + his editors + all the animators just make the same mistake several times?", that would be appreciated!--[[Special:Contributions/68.107.65.53|68.107.65.53]] 03:42, 20 December 2015 (EST)


==MAC Yields and Realism==
What Morhek said. It seems unnecessary for us to include these kind of notes, or else one might ask why we don't include ones on the Sangheili page about bipedal convergent evolution or the slipspace page nitpicking other violations of the speed of light barrier. [[User:Tuckerscreator|<span style="color:#6600cc;">'''''Tuckerscreator'''''</span>]]<sup>([[User talk:Tuckerscreator|<font color="#008000">stalk</font>]])</sup> 02:41, 20 December 2015 (EST)
:This would make sense if a slug was actually said to be traveling at 30 km/s and failed to act like a hypervelocity impactor. However, that never happens. The note is not pointing out how an aspect of the game/novel isn't consistent with the laws of physics. It's simply noting that, while the MAC is capable of propelling the slug to 30 kilometers per second by taking several minutes to charge, it almost never does. The note than notes why this is by citing the lore within the same book. By this logic, this page shouldn't list the TNT-equivalent yield of any of the MACs, because "maybe the formula for kinetic energy is different in this universe".--[[Special:Contributions/68.107.65.53|68.107.65.53]] 03:42, 20 December 2015 (EST)


I just want to throw this out there since the talk page seems to be centered around the power of this weapon: none of the figures that have been calculated can be possible, and I doubt the authors of the novels or the encyclopedia considered logic too terribly much when they wrote them, thus they simply made up figures that sounded cool. Here's why 1.17 teratons is completely retarded and unrealistic: the covenant supercruiser of FoR took 3 MAC hits to its shield, and it didn't fail. That would be equal to 1.17*3=3.51 teratons of kinetic energy dissipated. The largest nuclear weapon ever detonated was the Tsar Bomba in 1961, at 50 megatons. Thus, the supercruiser's shield should have absorbed over 70000 times the energy of the world's most powerful nuclear weapon, which itself had a power output of 1.4% of the sun. If covenant ships can generate that much power, then one of them should be able to obliterate the planet (exaggeration, yes, just making a hyperbole here). HORNET mines, as seen in GoO, can destroy a fleet of covenant vessels, yet they are but a mere 30 megatons of yield. How is this possible? Because the MAC is not nearly as powerful as is asserted on this page. We know that covenant vessels can survive nuclear blasts in the multimegaton range undamaged, but as a nuclear detonation in space spreads its energy out spherically from the point of detonation, a comparatively tiny fraction of the energy is going to hit any given ship, even at point blank. Those who have asserted powers in the several kilotons are likely the most accurate in regard to the MAC power, given what we know about nuclear weapons vs covenant shields. And the power of the super MACS? All recharged in 5 seconds? Don't even get me started on the rediculous nature of THAT.... [[User talk:Quakeomaniac|Quakeomaniac]] 08:40, January 7, 2010 (UTC)
::I'm not slighting Mr. Nylund's credentials. And I conceded that your scenario is ''entirely plausible.'' But my major point was that unless we can get it confirmed by a reliable source, tt amounts to us making assertions that, however likely, may not be true. There are other Halopedia members who have accounts on Halo Waypoint, and I know for a fact that Grim peruses the HBO forums, so I'm sure we can raise the issue in time for a cannon fodder - though given how busy the season is going to be in the coming weeks, I wouldn't hold my breath for an answer until the new year.
::Edit: [http://carnage.bungie.org/haloforum/halo.forum.pl?read=1211174 I posted on the HBO forum], asking for some clarification. It just remains to be seen if Grim will decide to answer it.  
::It's not from Grim, but I got a [http://carnage.bungie.org/haloforum/halo.forum.pl?read=1211180 very good counterpoiunt] from one of the HBO forumgoers. I'd recommend you read it. -- [[User:Morhek|<b><font color=indigo>Qura 'Morhek</font></b>]] [[halofanon:user:Specops306|<u><i><font color=blue><sup>The Autocrat</sup></font></i></u>]] [[User talk:Specops306|<u><i><font color=purple><sup>of Morheka</sup></font></i></u>]] 06:36, 20 December 2015 (EST)


==MACs At Given Velocities Useless Outside Super-Close Range==
My main problem with the current given velocities for MAC guns on the main page (30 km/second for smaller ships, etc.) is the given in this copy-paste of the same argument I made on TV-Tropes' Halo Headscratchers page: "But the "old" measurements currently on the site make no sense for space combat! You're telling me ships fire rounds that only go 30km per second? In space battles, which should routinely take place on scales of tens of thousands of kilometers? For a Covenant ship 30,000 kilometers away, it would take a MAC round (30,000 divided by 30 equals...) 1000 seconds - over 16 and a half minutes - to reach its target! Whereas the 120,000 kilometers-per-second shot given by the Encyclopedia would take only a quarter of a second."
Basically, if the low-end velocities currently accepted as "canon" were true, they'd make MACs all but useless at anything more than (to borrow a phrase from the Mass Effect Codex) "knife-fight" range. Anything more and a Covenant ship would have more than enough time to see and avoid the incoming projectile, would have moved significantly from the position it was at when the shot was fired, etc. Even the Super-MACs, firing shells at 12,000 km/second, would take a good 2 1/2 seconds to hit a target 30,000 km distant, whereas being fired at .5c would hit in 0.2 seconds.
: I've been thinking about this recently and to be honest, I can't recall a single source where distances of the naval engagements are mentioned. Perhaps this was intentional so that the distances (in headcanon) could be scaled with whatever speed was determined to be accurate in universe. Perhaps someone can shed light on this. [[User:AB1908|AB1908]] ([[User talk:AB1908|talk]]) 12:17, December 25, 2019 (EST)


#This is Sci-fi, get use to it.
== Regarding recent edits to this page ==
#Non of the figures calculated can be possible? Its sci-fi and canon overrides all else.
#Lie, the shields of the super cruiser were downed by MAC 3 MAC rounds and around 500 Archer missiles.
#GoO is overruled by the latest canon info, the Halo Encyclopedia. Per Bungies canon policy old overrules old so older sources can not be used to overrule it.
#Farther on Nukes: The UNSC NOVA Bomb is proof that the UNSC has Teraton range nuclear devices given that it is stated to be nine fusion warheads with yield increased a hundredfold which means each warhead is 1/900th of the low-end 1.2 Petatons!
If Megaton range weapons were able to be used why then would the UNSC not nuke spam the Covenant with the resources needed for one NOVA Bomb?
#Ah, trying to dispute a state canon fact that the SMACs per TFoR can fire every 5 seconds?
#This is sci-fi, watch Star Trek if you really want to see impossible stuff.{{Unsigned|207.200.116.136}}


:Quakeomaniac does have a point, if not to point out the inconsistencies of ''Halo''. The Covenant shields do seem to possess different outputs and strengths, as many different weapons of different yields can be used to tear through their shields. A teraton range does seem unrealistic if a megaton warhead is enough. I would think that ships armed with MACs would have little trouble against Covenant ships. Aiming would be the hardest part. Can you be more clear on your 1.2 Petaton assertion? That seems like an AWFULLY large yield for a mere ''nine'' warheads, even if they are fusion.
This is just a note for the anonymous user who's been doing mass edits to this page recently. I'd massively encourage you to make an account and/ or join or [[Halopedia:Discord server|Discord server]] so we can properly discuss things, as there's a lot of assumptions and original research in here we might end up removing as per several clauses in our "[[Halopedia:What Halopedia is|What Halopedia Is]]" policy.  


::As for Star Trek, yes the stuff is impossible, but the creators hired scientists, physicists, and other experts in the field to literally invent futuristic devices, sights, concepts, and technology that was not only futuristic and cool, but also scientifically possible, meaning we as the modern human race could produce it or find it given the proper resources. Everything on that show is something that could theoretically exist (can't speak for the new movie). [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 14:46, January 7, 2010 (UTC)
'''Halopedia is not a speculative wiki'''
*''Note that speculating about aspects of the Halo franchise is welcome in the social areas of Halopedia - it simply must remain separate from the articles themselves.'''


:::I appreciate you taking the time to consider what I said Orion rather than just call me an idiot with a bunch of nonsense. Regarding the inconsistencies, here's an interesting one. The page for the covenant carrier states it can withstand 3 MAC rounds (not sure where that comes from, I'll just take it for now). Yet, the supercruiser in TFoR also took 3 MACs and a bit more (the archers) to drop its own shields. This implies that the carrier and supercruiser, two drastically different sized ships, have roughly equal shields. Makes little sense. This could perhaps be rectified if we knew the yield of an archer missile relative to a MAC round, but we assume its low based on the book. As for the guy who doesn't bother to sign his comments: Yes, this is sci-fi, thank you captain obvious. This does not prevent a meaningful discussion of it. As far as canon, that's the whole point I'm making, nothing agrees. As for the supercruiser, can you tell me where I mentioned the archer missile part? The GoO assertation doesn't need comment. Also the NOVA bomb is nowhere near a normal nuke, and the technology used in it is NOT used in the reactors on ships, which is what powers the MAC. And I'm not trying to state the SMAC can't fire every five seconds, merely that its energy usasage (if it's a 9+ teraton shot) is unrealistically enormous. Anyway, please consider what I said and try to have a meaningful discussion on it rather than insult me. [[User talk:Quakeomaniac|Quakeomaniac]] 18:19, January 7, 2010 (UTC)
Additionally, I can't help but feel this information comes as the result of a discussion or argument on another website - I want to remind you of this notice;


::::No problem. I understand how these things are. Jumping the gun and rushing to false conclusions only makes hot heads and steeled tempers, so the whole debate turns into an honor fight or resembles two brick walls communicating with each other. I definitely see the inconsistencies with shielding here. Perhaps the supercruiser was already suffering from decreased shield output so it took less force to breach them?
'''Halopedia is not a soapbox'''
*''Halopedia is not a website for individual opinions on any subject. Halopedia's articles are to be completely neutral on every subject, conveying all information available, and nothing more. Any creation of articles or editing of existing articles to reflect individual opinions or ideas on subject matter that consist of personal opinions on a topic will be immediately reverted or deleted. Opinions can be expressed on user pages, talk pages, or forums, but not articles.''


::::Based on the Archer's specifications and relative 'advancement' of human warfare technology and such, I would say the Archer has a pretty low yield, at least when compared to a MAC. But there could be some other factor in here not mentioned already: chemistry. Perhaps the chemical properties of the various warheads and MAC rounds create different situations for the Covenant shielding, so a nuclear warhead could deal more damage to a shield simply because its reacting causes additional strain on the shield. Conversely, the MAC could cause some chemistry to weaken the shielding, dealing more damage than other firepower.
If our more technical pages start becoming someone's platform to share their views to win arguments, we will be locking these pages to prevent anonymous editing. This isn't intended to be a warning or anything, just a notice to keep in mind (this is irrespective of whether the information put up is valid or not - in this instance, most here is good). I'd just rather not have it become a standard. As stated before, I'd highly encourage you to join our Discord so massive changes like this can be discussed with the rest of the team.


::::By the way, if you are familiar with the Romluan Warbird (pretty sure that's it), its most destructive weapon is somewhere on the order of a 52 terawatt beam. Now I don't know how that stacks up to a 1.17 teraton blast yield, but the Warbird is MASSIVE and I would suspect it is because it needs so much machinery to sustain a beam of that wattage. Just throwing it out there. As such, I am led to believe that the propensity for a ship the size of the POA using a single weapon with a 9+ teraton yield, considering how the most powerful nuke ever devised doesn't even begin to compare, is very, very low. A teraton output seems out of proportions, considering how in the 26th century, humanity still drives on wheels and still fires metal at supersonic speeds as their primary weaponry. Sure other advances have been made, but I would think that if we have AI that are practically sentient then we should have more phaser-like technology and hovercars.
Thanks a lot for reading! [[User:BaconShelf|BaconShelf]] ([[User talk:BaconShelf|talk]]) 08:33, May 29, 2020 (EDT)
 
::::PS: don't forget to watch your capitalization. Covenant should be capitalized. [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 18:41, January 7, 2010 (UTC)
 
:::::I am familiar with the Romulan ship, presumably you refer to the D'deridex class warbirds, which are, at least based on the designer's intentions, approximately 1300 meters long, larger than most any UNSC ship, slightly smaller than a Covenant destroyer. Fifty-two terawatts is nowhere even CLOSE to 1.17 teratons, as the Tsar Bomba was 5.4 YOTTAWATTS in power output (for reference, tera is 10^12, yotta is 10^24). So there we have it, technology in Trek is far more advanced, yet somehow the halo weapons are tremendously more powerful? I think we can conclude that the MAC yield is improbable. [[User talk:Quakeomaniac|Quakeomaniac]] 18:54, January 7, 2010 (UTC)
 
:::::Also, your idea about chemistry is rather interesting. I always looked at energy shields in any universe as just an energy vs energy concept. In halo though, we see plasma weapons doing more damage to shields, and your reasoning of chemistry (could be physics too), makes sense to account for the difference. If you have any more thoughts on chemistry and shields, please toss them out there. I don't know that chemistry can account for a huge huge difference in nuclear and MAC yield, but it could be helpful nonetheless. [[User talk:Quakeomaniac|Quakeomaniac]] 19:06, January 7, 2010 (UTC)
 
::::::I used to see shielding as energy vs. energy, or rather a form of energy that was 'solidified' to withstand/absorb other forms of energy on impact. As such, I viewed a shield as a simple solid geometric plane encapsulating a vessel, and was neither penetrable nor malleable. However, hearing how the Covenant shielding was penetrated in a specific area, and recounting various other accounts of buckling shielding and whatnot, my outlook on the standard model of vessel-based shielding has changed. Perhaps the shielding is generated by oscillating specific frequencies around the ship. These frequencies could interact with various types of energy to produce a shielding effect by either neutralizing the incoming energy, or reducing its bite. This setup could potentially allow for many different things to enter an exit the space surrounding a vessel freely, while at the same time blocking damaging energy. If this is the case, then chemistry is more than likely a major component in shield design.
 
::::::We see that MJOLNIR shields are easily depleted by sustained plasma fire, and a charged plasma pistol shot wipes them out, no matter how strong. This definitely implies some chemical workings here. For an overcharged shot to completely neutralize an overshield, yet have a much smaller effect as a single shot means that the shields could be overloaded by a high amount of plasma impacting at one moment. This could have some chemical interaction between the shields and plasma. My theory is that shields can neutralize as small amount of incoming plasma, but still allow some of it to reduce the shield integrity. If too much plasma impacts at one moment, then the shield cannot neutralize enough for the plasma to overwhelm the integrity and collapse it.
 
::::::Now that is not chemistry right there, but chemical interaction could easily occur between the shields (or energy frequencies) and, say, a NOVA bomb. I believe that a MAC round, being a pure kinetic weapon, does not interact with the Covenant shielding in any way other than busting through it. If anything, the speed of the round could create some as-of-yet undiscovered (or unmentioned) form energy to collect up, similar to how a bullet bunches up the air in front of it as it travels. As this bunching of energy nears the shields, it could cause the frequencies or shielding to thin out (or likewise thicken up). A NOVA bomb could work in the same way, and could also create interactions by detonating. The nuclear blast and radiation could interact with the shielding in a detrimental way.
 
::::::And as if all that wasn't enough, it may also be possible that the shielding only stops more conventional forms of energy, i.e. kinetic, nuclear, light, etc., but may actually ''act'' as a semipermeable membrane and allow other forms of energy, possibly those generated form a NOVA blast, to pass through. These forms of energy could interact with whatever it is that produces the shielding and corrupt their integrity.
 
::::::Whew, this is fun. Lots of stuff to consider when one examines an event analytically and scientifically haha. [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 20:25, January 7, 2010 (UTC)
 
:::::::Hah, yeah you make a great point here, I also enjoy looking at a fictional technology in a scientific way. Who knows, could tell us how it works one day. Interesting though how we went more from a MAC discussion to a shield/star trek (what with the frequencies) discussion though, but it's no problem. I was looking at the energy shield talk page earlier, and RelentlessRecusant posted a neat bit on shield physics, and he made some points that are similar to what you're saying. Would be nice to get him to read over this discussion. You can flip over to that and read it real quick if you want, tell me what you think. The concept on plasma pistols makes good sense, as does the idea of allowing some things (i.e EM energy from shipboard sensors) to pass freely in and out of the shield, while damaging energy (i.e the ships plasma torpedoes) can't, as we see it drop parts of the shield to fire. I can't disagree with what you've said, as it sounds good, and I like the thought in it. [[User talk:Quakeomaniac|Quakeomaniac]] 21:04, January 7, 2010 (UTC)
 
::::::::Will check it out. However, the overall values of MAC yields still remain unsolved. I did see that they were changed to the gigaton level again, which is more reasonable but perhaps too high. I would need more specific examples of MAC and NOVAs being used in combat to formulate a working hypothesis, as I have not read any of the books (wish I owned them). [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 22:40, January 7, 2010 (UTC)
 
:::::::::Definitely recommend reading the books, they're great. Haven't read them all myself, but I have read the Nylund novels. I would concur that a gigaton range is still quite a bit too high. I personally feel that anything higher than the very low megaton range is too much, because I'm using HORNET mines as my estimate for the upper limit of the typical Covenant ship (essentially anything but the most powerful vessels i.e assault or supercarriers) shields. One nuclear detonation on the scale of 30 megatons, the yield of the mines, will drop, or come close to dropping, the ships' shields. Now, maybe the EMP effect of nuclear detonations has an effect here, but I can't see it being so huge that a MAC would need teratons of energy to compensate for the lack of the EMP effect. Thus, based on the common occurence of two to three MAC shells to break a shield, and the fact that a nuke in space won't direct anywhere near all its energy upon a single ship, I conclude that the likely yield of a MAC is somewhere in the mid to high kiloton range. But as you said, it's an unsolved mystery. [[User talk:Quakeomaniac|Quakeomaniac]] 03:18, January 8, 2010 (UTC)
 
::::::::::After reading your response above, a new theory came to mind. Since a MAC round is purely kinetic, that force could easily be sustained, absorbed, or dispersed, at least somewhat. So my hypothesis is that Covenant shields are able to absorb a significant degree of kinetic energy, but they can only sustain so much. If a MAC round were to possess teratons of kinetic energy, perhaps teratons were absorbed, but a few kilo- or gigatons were leftover, and these penetrated the shields, making a few MAC rounds comparable to NOVA bombs, HORNET mines, and such. This explains ''why'' the UNSC would need a weapon with such a high yield, but leaves the question of ''how'' unanswered. [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 05:32, January 8, 2010 (UTC)
 
:::::::::::Ok.... I'm not 100% sure I follow you on this one. If I'm reading what you said correctly, you're theorizing that the shield is simply extremely effective against kinetic impact, but against something such as electromagnetic radiation (x-rays and gamma rays and the like) released from a nuclear explosion, they can't withstand it as well? This also makes me wonder, based on this... the book seems to indicate that a vessel's shields are split into multiple sections (as we see both Cortana aboard the Ascendant Justice and 'Mantakree's officers aboard the Incorruptible indicate certain portions of the shield failed), and a MAC round directs maximum energy over minimum surface area, much like modern kinetic energy penetrators fired from tank guns, so that the round would direct all energy upon one portion of the shield. A nuclear explosion would disperse its energy over the entire ship's shields (or at least one side). This even further seems to support that the MAC yield is far lower than the article suggets, but at the same time, it does not refute your theory that the shields are simply very efficient at dispersing kinetic hits, much like an elite's shield is versus human weapons. Actually, nuclear explosions, at least here on Earth, create an ultrahot plasma at their hypocenter, which is seen as the characteristic fireball. Now, in space, a nuclear detonation simply releases an enormous amount of high energy radiation, since there's not an atmosphere to absorb it and create a fireball, BUT, the whole idea of introducing the plasma part in atmospheric detonations is to suggest that, since we know shields to be weak to plasma, nuclear explosions may be much more effective against shields, thus allowing a lesser amount of energy, in a different form, to penetrate them. I apologize for the rambling, but new ideas seem to come up quickly. [[User talk:Quakeomaniac|Quakeomaniac]] 06:36, January 8, 2010 (UTC)
 
::::::::::::Hey no worries. I know what it's like. I theorize that the shields are not necessarily extremely effective at dispersing kinetic energy, just capable of dispersing a large amount. If a MAC round really did have teratons of energy, then I theorize a Covenant shield would be incapable of preventing all of that energy from penetrating the shield, leaving a few kilo- or gigatons left over that damage the ship's exterior. The shields could withstand some of the force from a nuclear blast, particularly the rushing wave of particles and energy, but against the radioactive side of things, the shields may not be able to block all or any of it.
 
:::::::::::::Your statement on different sections is definitely interesting. I didn't know that. If the shield is broken up into different powered sections, I would think each section would be stronger overall then just powering a single shield section. This would mean more force can be sustained, and the UNSC would need more force to penetrate. Since plasma energy could be produced via a nuclear explosion in space, and Covenant shielding has been observed to be vulnerable to plasma fire, this could make a NOVA bomb a better weapon of choice against the Covenant, even though it has a small yield. [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 14:41, January 8, 2010 (UTC)
 
::::::::::::::Are you suggesting that anytime a MAC round impacts a covenant shield, a small part of the energy makes it through? Like.... that no number of rounds would TOTALLY drop it, but each successive round would do more and more hull damage? Also, the idea of compartmentalized shield sections having more power is a neat idea, as it would allow a shipmaster to divert power to sections of the shield that are vulnerable, and disable sections not in any danger. [[User talk:Quakeomaniac|Quakeomaniac]] 18:10, January 8, 2010 (UTC)
 
:::::::::::::::Not quite. In my mind, shields can only take so much battering before they just become useless. Perhaps they still have some effectiveness, but when you consider the fact that the Covenant is getting their posterior whooped by tungsten slugs traveling at nearly half the speed of light, a weak shield isn't going to do much for them. I believe that after so much MAC impacts the shields fail to stop most, if any, of the MACs kinetic energy, so two or three successive shots could punch a hole by deteriorating a shield section. Speaking of sections, I definitely think they are used, especially in Star Trek. The idea of a uni-shield seems ineffective and weak when compared to the advantages of multi-shielding. Over half this conversation should be moved to the shield talk page methinks haha. [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 18:30, January 8, 2010 (UTC)
 
::::::::::::::::As for the shield talk page... yeah that would probably be a good idea. Star trek definitely uses sections, in the new movie Pike says "divert auxiliary power from port nacelles to FORWARD shields." I pretty much concur with what you say on shields... now we just need a logical explanation as to HOW the UNSC reactors can produce that much energy, if we're going to go with the why that this enormous conversation created. [[User talk:Quakeomaniac|Quakeomaniac]] 20:23, January 8, 2010 (UTC)
 
::::::::::::::::I agree. I'll get back and see if I can't move this to the shield talk page. Perhaps someone there will know why a MAC round is listed as such a kinetically powerful weapon. I mean really the force should be calculable by Newton's Second Law (F=ma), so if I can get the mass of the slug and the acceleration imparted on it by the magnetic coils. Given the mass is a large, as is the acceleration (they list it as half of c), I would expect the force to me likewise large, but I would need to convert the force units from F=ma (Newtons) to teratons (or gigatons, kilotons, etc). [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 21:36, January 8, 2010 (UTC)
 
:Please continue your discussion below. Oh, avoid using the asterisks (*).- <font face="Century Gothic">[[User:Subtank|<font color="gold"><font color="#FF4F00">5</font>əb<font color="#FF4F00">'7</font>aŋk</font>]]<sup>([[User talk:Subtank|<font color="#FF4F00">7alk</font>]])</sup></font> 21:50, January 8, 2010 (UTC)
 
::My apologies. I knew I was missing something by using *. It was a : instead. [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 23:07, January 8, 2010 (UTC)
 
Please don't take this as an insult, but I'd just like to point out that Newton's second law doesn't mean anything. The physical constant C is a velocity, approximately 3*10^8 meters per second, not an acceleration. The formula you are looking for is that for kinetic energy, E=(1/2)MV^2. By the work-kinetic energy theorem, this formula will account for the forces imparted by the slug anyway. Force and energy (kilotons, megatons, so on are units of energy) are not the same thing, so you can't convert them directly. Just trying to steer you in the right direction. [[User talk:Quakeomaniac|Quakeomaniac]] 22:28, January 8, 2010 (UTC)
 
:None taken. I forgot that one. I wasn't saying c was the acceleration, just the speed to which the slug is accelerated to. The actual acceleration could be calculated by a=v/t and should be a fairly simple matter. I have never worked with the -ton units before, so I assumed they were force units. However, I have no idea how I arrived at that, considering how this whole discussion has been about energy. But yes, the ΔKE equation will work. Since we need the energy value, I just realized we have no use for the acceleration but to calculate the force as an added bonus. UNLESS...the Covenant shields protect against energy '''and''' force, in which case it could be difficult to discern which of the two properties the MAC slug uses to breach the shields. This could mean that the slug, upon contact with the shield, interacts in such a way that the kinetic energy is transformed into work, and then into force, and it is this force that the shields can only withstand so much of. However, for a slug to damage the ship's exterior, some of the slug would have to travel through and impact the hull, since to my understanding KE cannot be transmitted as other forms of energy could. It needs an object to impart that energy to another object, much the same as sound needs a medium in which to oscillate. [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 23:07, January 8, 2010 (UTC)
 
I actually think, rather than force, what you may be looking for here is pressure, or how much force the MAC round exerts over a given area of the shield, and the shield thus may have a limit to how much any small portion can withstand, which would make sense. The APFSDS round fired by the SRS99C sniper rifle has a very small frontal area and very high velocity, thus it is able to punch through several enemies at once. In the same way, in the novels, we see MAC rounds leave holes in the hulls of covenant ships (in TFoR this is prominent) but it doesn't do much to disable the vessel, due to their build quality. Thus, the shields may be unable to withstand such a huge force on a comparatively tiny area, just as the hull is. The force exerted is a matter of how quickly the shield can stop the shell, based impulse-momentum. I can see what you're getting at, but consider pressure. The shields also obviously must protect against force, or rather exert a counter force to stop the projectile. [[User talk:Quakeomaniac|Quakeomaniac]] 03:24, January 9, 2010 (UTC)
 
:Gotcha. Pressure definitely is involved, but probably should be considered after we settle just how many tons of energy a MAC round has. The pressure talk should go to the shields page when we can explain/speculate how the Covenant shielding is so advanced and all but can't stop a simple metal slug (even though it is traveling at near-rrelativistic speeds). [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 03:29, January 9, 2010 (UTC)
 
I personally think that the simple explanation is just for storytelling purposes. I doubt the authors of the novels considered logic or consistency too much when the books were written. In fact, from what I can see of Halo Wars Genesis on this site, the lone ship at the second battle of harvest withstood a tremendous battering of nukes and MAC rounds. Now, for a while the supercarrier page possessed this information, as it seems people came to the conclusion that by the size of that vessel and its immense power, it must be that ship. However, it could have been a more typical covenant ship, albeit a rather strong one. So, we can't really say for sure who is right, the novels, or Genesis. If it were my choice, I'd say its more likely that Genesis is right, and that covenant ships are probably tougher than the novels let them be. In the novels, human ships can win with reasonable ease. I mean come on, in TFoR, the puny Pillar of Autumn soloed a covenant cruiser 3 times longer than it, the supercruiser, and I consider that highly improbable and retarded, and I posted that on the talk page. Our long conversation here has come up with more interesting ideas about how shields work than about the original topic, the yield of the MAC. I'm going to say that A) covenant ships are LIKELY more durable than they appear in the novels, and B) the MAC is almost certainly less powerful than the calculations from canon info give. Let me know if you agree with that. We can continue talking about shields on that page haha. [[User talk:Quakeomaniac|Quakeomaniac]] 04:19, January 9, 2010 (UTC)
 
:I agree with both of your assertions. The [[Inconsistency|List of Inconsitencies in Halo]] certainly bears testament ot the fact that the novelists and designers did not put a whole lot of thought into synchronization and consitency when they each put together their works. I move that we do some good 'ol physics to calculate the correct energy value. All we need is the mass. We can assume that the velocity is between .4 and .5 c. Using that in the KE equation would give us the kinetic energy, and from their (in the shield page) we could thoerize why it is that one weapon is more effective than another against Covenant shields. (PS I sent you an invite for your consideration) [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 05:18, January 9, 2010 (UTC)
 
:Funny thing is, the 1.17 teraton figure comes from the 600 ton shell stated in the novels and the presumably 40% of C muzzle velocity found in the encyclopedia, which is what started this entire amusing debate... oh what to do now. The velocity is what's likely horribly wrong anyway, because that is what makes the energy so unrealistically high, as velocity is squared in the KE equation, mass isn't. [[User talk:Quakeomaniac|Quakeomaniac]] 05:38, January 9, 2010 (UTC)
 
::But the tonnage is ''weight'' not ''mass'', so it must be converted for it to work in the equation. [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 05:41, January 9, 2010 (UTC)
::You can trust me on that one, it is, the SI unit of mass is the kilogram, and there is a conversion factor for tons to kilograms i.e 600 tons is about 544,000 kilograms. I can verify the result of 1.17 teratons is (sadly) what the canon information yields when you bring in physics. [[User talk:Quakeomaniac|Quakeomaniac]] 06:11, January 9, 2010 (UTC)
::Ok so I lied, the result I calculate is .94 teratons or 940000 gigatons, but regardless, that's still WAAAAAAYYY too big haha... [[User talk:Quakeomaniac|Quakeomaniac]] 06:13, January 9, 2010 (UTC)
 
::I confirm the math. I got 1.37 teratons though. I will try again tomorrow, with more precise methods. I don't grasp the immensity of this energy, so I'll also compare it to energy values I am familiar with. [[File:Gunnery_Sergeant.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 06:30, January 9, 2010 (UTC)
 
::I just want to put up a hilarious result I got doing some calculations. If the super MAC can fire a 9.98 teraton shot every 5 seconds, this requires a power supply capable of outputting over 8 trillion gigawatts of power, not to mention doing that wirelessly. Call me crazy, but I'm going to say this is impossible. [[User talk:Quakeomaniac|Quakeomaniac]] 21:04, January 20, 2010 (UTC)
 
::A further thing I noticed. The article even states the standard ship based MAC is a 600 ton projectile at 30,000 meters per second, or .0001c. This yields nowhere even CLOSE to 1.17 gigatons of energy, but more like 58.6 kilotons, a FAR more realistic answer. The whole .0001c velocity also implies impossibility for the super MAC velocity of .5c [[User talk:Quakeomaniac|Quakeomaniac]] 23:28, January 25, 2010 (UTC)
 
:::That sounds like it explains it. I have no idea how they came up with the other values then, if the information needed was already in the article. [[File:Lieutenant Grade One.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 23:30, January 25, 2010 (UTC)
 
::Ok I just have to throw this out because it's the most hilariously improbable thing I've calculated yet. If you go compute the required acceleration for a projectile to reach .5c within 1336 meters (the length of the ODP), you get but a mere 858 billion G's. I dunno about you, but I feel that would destroy anything ever... haha. Now if you're familiar with mass effect, a game whose warships use a very similar main armament to the MAC, their dreadnoughts (of very similar size to the marathon or halcyon classes) fire projectiles that are a mere 20 kilograms in size at 1.3% of lightspeed, but this not only gives the perfectly reasonable 38 kiloton yield, but the also reasonable 250 G's of acceleration (assuming a 1000 meter ship). [[User talk:Quakeomaniac|Quakeomaniac]] 23:37, January 25, 2010 (UTC)
 
::Oops I lied make that 825 million G for the mass effect ships... hah my mistake. [[User talk:Quakeomaniac|Quakeomaniac]] 23:40, January 25, 2010 (UTC)
 
:::Yes. We now have conclusive evidence and lasting proof that the original MAC yields were impossibly high. I think the article should be changed to reflect your calculated values, and make sure to include proof (the math) so others don't automatically jump to conclusions and think the value is wrong. On the subject of G's, a regular washer cycle spins at about 79G's of centripetal force. Haha. [[File:Lieutenant Grade One.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 23:42, January 25, 2010 (UTC)
 
:::Yes indeed I very much agree. It's about time we brought this insanely long topic to a close. However, because I don't want a bunch of insane flamers coming after me for betraying the halo bible (the encyclopedia), I'll leave it up to an administrator (preferably) or another editor to make the changes if it is seen as desirable. I appreciate all your input to the discussion Orion. [[User talk:Quakeomaniac|Quakeomaniac]] 23:55, January 25, 2010 (UTC)
 
::::I can understand that. People these days...it was agreeable talking to you as well. Hopefully this lengthy discussion will end up bettering this community. [[File:Lieutenant Grade One.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 00:13, January 26, 2010 (UTC)
 
 
“Quakeomaniac does have a point, if not to point out the inconsistencies of Halo. The Covenant shields do seem to possess different outputs and strengths, as many different weapons of different yields can be used to tear through their shields. A teraton range does seem unrealistic if a megaton warhead is enough. I would think that ships armed with MACs would have little trouble against Covenant ships. Aiming would be the hardest part. Can you be more clear on your 1.2 Petaton assertion? That seems like an AWFULLY large yield for a mere nine warheads, even if they are fusion.
As for Star Trek, yes the stuff is impossible, but the creators hired scientists, physicists, and other experts in the field to literally invent futuristic devices, sights, concepts, and technology that was not only futuristic and cool, but also scientifically possible, meaning we as the modern human race could produce it or find it given the proper resources. Everything on that show is something that could theoretically exist (can't speak for the new movie).”
 
1. The 1.2 Petatons is a low using the Inverse Square Law for the shattering of the moon (see the NOVA bomb page). In the end each of those nukes is 1/900th the yield of the NOVA.
 
2. ALMOST NOTHING IN STAR TREK IS SCIENTIFICALLY POSSIBLE. This is the show that has blacks holes with cracked event horizons, Super Nova that can wipe out a large area of the galaxy, and were half an ounce of Anti-Matter can blow half the atmosphere off an M-class planet. Only a very few things in ST are possible, hell the book “The Physics of Star Trek” evens says most of the stuff is impossible.
 
 
“I appreciate you taking the time to consider what I said Orion rather than just call me an idiot with a bunch of nonsense. Regarding the inconsistencies, here's an interesting one. The page for the covenant carrier states it can withstand 3 MAC rounds (not sure where that comes from, I'll just take it for now). Yet, the supercruiser in TFoR also took 3 MACs and a bit more (the archers) to drop its own shields. This implies that the carrier and supercruiser, two drastically different sized ships, have roughly equal shields. Makes little sense. This could perhaps be rectified if we knew the yield of an archer missile relative to a MAC round, but we assume its low based on the book. As for the guy who doesn't bother to sign his comments: Yes, this is sci-fi, thank you captain obvious. This does not prevent a meaningful discussion of it. As far as canon, that's the whole point I'm making, nothing agrees. As for the supercruiser, can you tell me where I mentioned the archer missile part? The GoO assertation doesn't need comment. Also the NOVA bomb is nowhere near a normal nuke, and the technology used in it is NOT used in the reactors on ships, which is what powers the MAC. And I'm not trying to state the SMAC can't fire every five seconds, merely that its energy usasage (if it's a 9+ teraton shot) is unrealistically enormous. Anyway, please consider what I said and try to have a meaningful discussion on it rather than insult me.”
 
I have. I am sorry if I insulted you, I was just in a hurry to get that posted was all. I meant no offense.
 
1. It may have been because the Super Cruiser was low on power from firing the Energy Projector at the moment.
 
2. Not only that Keyes wanted to get the PoA away from the ship because he was afraid that even at a distance I believe in the hundreds to thousands of kms here thought it could damage the ship which gives a very high yield.
 
3. We must also note that an Archer missile was able to chase after for a few seconds a Covenant ship going 100,000 KPH, so I’m surprise they put a warhead on since the KE would be in the MT range.
 
4. As I said before sorry. But in Sci-fi things that just shouldn’t be possible happen like with ST. Also. You didn’t mention Archer missiles, I was just pointing out that the 3 MAC rounds and 500 or so Archers downed the shields.
 
5. The NOVA Bomb is stated to be made up of 9 fusion warheads that have the yield increased a hundred fold, meaning that each nuke making up the NOVA has 1/900th the yield of the NOVA bomb going off.
 
6. Lets look at high yields and ship ranges and stated speeds from the games and books now, shall we?
 
A. Halo:CE when the PoA fusion reactors goes off the fireball is over a thousand kilometers across giving it a yield of 100+ Teratons.
 
B. Halo:CE the Longsword on fusion power is able to cross 20,000 kilometers in 90 seconds.
 
Both of these examples would be impossible with real-world fusion. Continuing now:
 
C. Halo 3 the Covenant are able to in a short time with a small fleet uncover the 108 km Ark Portal in hours.
 
D. Halo 2, once the Covenant fleet has entered the effective range of the SMAC stations even the ships are firing which supports a higher speed for the round then the silly 30/km second round that crossed 3,000 kms in seconds from TFoR.
 
E. Page 8 of TFoR a Covenant fleet of only 36 ships removed the oceans and atmosphere of a planet in 1 hour which gives us Teraton range yield.
 
F. We also have the Captain of a UNSC frigate state his ship can do 80 million KPH which also puts it above real-world fusion.
 
G. FS a the AJ-Gettysburg is able to pull around 6400 Gs when it accelerates across 10,000 kms in 18 seconds or so which gives us just under a Teraton for engine output there.
 
H. Halo 3 the FuD is able to cross a greater distance in a similar amount of time to the Longword in Halo:CE.
 
It seems to me even parts of the game agree with low GT to low TT firepower.{{Unsigned|207.200.116.136}}
 
:Mr. Anonymous User 207.200116.136, are you asserting that Star Trek is for the most part impossible? Secondly, I'm unclear what you're getting at with your post. It looks like you're backing us up by bringing more inconsistencies to the table. Is this correct? [[File:Lieutenant Grade One.png|25px]]<small><span style="border: 2px solid black; -moz-border-radius:24px">[[User:orionf22|'''<span style="background-color:darkgray; color:white; -moz-border-radius-topleft:24px; -moz-border-radius-bottomleft:24px">&nbsp;&nbsp;ΘяɪɸɴF22&nbsp;&nbsp;</span>''']][http://halo.wikia.com/wiki/User:orionf22<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;Me&nbsp;&nbsp;</span>][[User talk:orionf22|<span style="background-color:darkgray; color:firebrick; -moz-border-radius-bottomleft:24px; -moz-border-radius-topleft:24px">&nbsp;&nbsp;Talk&nbsp;&nbsp;</span>]][[Special:Contributions/orionf22|<span style="background-color:darkgray; color:firebrick">&nbsp;&nbsp;Contributions&nbsp;&nbsp;</span>]][http://xfire.com/clans/coag<span style="background-color:darkgray; color:gold; -moz-border-radiusbottomright:24px; -moz-border-radius-topright:24px">&nbsp;&nbsp;<b>CAG</b>&nbsp;&nbsp;</span>]</span></small> 03:06, January 26, 2010 (UTC)
 
:To begin with, I always thought of Star Trek as one of the universes that tried to be accurate. Possible today? No. A lot of Star Trek though doesn't really violate the laws of physics, but at the time it was made, these things, like antimatter, were not nearly so well understood as today. Incorrect numbers I will give them a break for. I also don't know what you're trying to say. Please back up what you have said with some sources, as I have no idea where you're getting a lot of this, and I'm familiar with all but the two newer novels. I'm not trying to necessarily say you don't have any argument, but please indicate where you found this. The one part I can safely comment on though is the supercruiser. Why would a ship be designed so that it could not fire its weapons without draining its own shields? Halo Wars Genesis and Legends (I think) depict a battle with a SMALLER covenant ship being tremendously harder. I seriously doubt low on energy is a realistic reason if the ship fired one shot. After all, it fired 5 at once earlier. [[User talk:Quakeomaniac|Quakeomaniac]] 17:48, January 26, 2010 (UTC)