Talk:EMP/Archive 1

If memory serves, wasn't the device that Apollo used to create the EMP not an actual EMP device, but an old "FTL coil" or something like that?Kuralyov 10:40, 11 Jun 2005 (EDT)

He referred to them as "electric pulse generators from the Galactica." How they got on the Colonial One is beyond me. He said he used them to manipulate the hyperspace engines to create the illusion of a nuke. He also mentioned that he used the tactic back in war college, so I'm guessing it's EMP. -- YeNguyen 12:05, 17 Jul 2005 (EST)

It is likely these EMP generators were placed on the ship as part of the offloading of various unneeded equipment from the Galactica Museum-to-be. Being a government vessel, the ship would have sufficient clearance to carry the stuff back home for later return to a Colonial miliary depot. Apollo didn't manupulate anything with the generators, he simply activated them. The EMP created disabled any electronic impulses in the missiles, making them glide by harmlessly, and sending off a pulse that would normally come from these weapons, so the Cylons were convinced that the missiles left their mark without a visual confirmtion. It also had a temporary side-effect on Colonial One's occupants, since human brains also work on electric impulses. It is likely that these items were actually used as early weapons in certain Cylon battle scenarios. Spencerian 01:46, 18 Jul 2005 (EDT)

Some thoughts on EMPs in BSG: Space based nuclear detonations can't be compared with atmospheric detonations. EMPs only really exist in atmospheres where the interaction of high intensity gamma rays with matter creates a huge magnetic resonance field. So nukes in space wouldn't disable spacecraft electronics. You might get some Compton Scattering from the matter in the nuke itself, but there is no medium to create a huge EM field. But I think it makes sense that nukes could blind Dradis sensors by overloading them with radiation (as seen/heard in the Miniseries and Pegasus-Extended).

However EMPs have no effect on the human central nervous system! That Apollo (and the rest of the crew too) went unconscious is either an error in writing or it's an effect of something else in the pulse generation. --Serenity 07:38, 20 September 2006 (CDT)

Damn, Serenity. :) Either you have knowledge that dwarfs any of our fan-boy experience, or that was a lot of technobabble. Could you point us to a Wikipedia reference to help us understand why EMP doesn't travel in space? Atmosphere or no atmosphere, I thought that this energy just radiated. I reread your first sentence and I think I understand, but elaboration would be appreciated (and, may I say, illumininating). --Spencerian 11:40, 20 September 2006 (CDT)

First off a nuke produces gamma rays. Those are high energy photons. In an atmosphere those photons produce electrons through Compton scattering. The electrons then additionally ionsize the atmosphere and produce even more secondary electrons. The electrons then interact with the Earth's magnetic field. Spiraling around a field line, they'll create a short EM burst, because they are negatively charged and are moving. According to the Lorentz force that will create a magnetic field perpendicular to the movement direction.

Just look up "EMP" and "Compton scattering" on Wikipedia, though the physical details are bit lacking :)

Back to BSG. The effects of nukes aren't depicted wrong. They don't disable starship electronics, since there is no magnetic field, but the radiation can still affect Dradis and wireless (because they rely in some form of radiation as well). That's maybe not technically an EMP, but it could be a somewhat colloquial expression for a similar effect (Cain refered to the EMP of nukes in Pegasus-Extended). Some people do that even today.

Moreover, the radiation itself could have an effect on the electronics, but I'd expect it to be shielded and radiation hardened against cosmic radiation anyways. Plus you'd want shielding for the crew. Fully blocking gamma radiation would require extremly massive armor though.

What I removed is the part about EMPs (from those generators in the Miniseries) possibly overloading organic Cylons or even humans. Doesn't happen since there isn't a metal antenna to catch the EM field. Raiders though might be affected through their metallic hull. As said, that the people in the Miniseries fell unconscious is an error. I just hope noone had pacemakers ;) --Serenity 12:31, 20 September 2006 (CDT)