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>> Interesting thing: According to Wikipedia [which is never wrong], a
>> nuclear explosion only generates an EMP because of the Earth's
>> magnetic field. Like, if it was in space, it wouldn't do that...
>
> I think I heard it was the atmosphere, not the magnetic field...
Seems the gamma rays generate a current in the atmosphere [which
wouldn't happen if there was no atmosphere], and the magnetic field
channels this to the ground [in certain parts of the globe which happen
to include the USA].
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