[TaxRelief]

http://www.cc.gatech.edu/grads/i/irbyt/emp.pdf

[oldleft]

Excellent paper, thank you. It really doesn't agree with me or the original post, as it states that an nuclear burst at 500km would have an EMP with about a 2500km diameter. The numbers I've always seen are a 10mt bomb at 200km would have an effective EMP at a 600km radius. If you figure the area of the sphere as it comes in contact with us (the ground) you'll find a radius of about 400km, or 250 miles, not the entire US.

I'm not saying I'm the ultimate authority, just an informed opinion.