What causes an electromagnetic pulse?

1. What causes an electromagnetic pulse?
   • There are several causes:
     • Detonation of a nuclear bomb
     • A Solar flare
     • A device intended to cause an EMP
     • A close lightning stroke
     • A massive powerline short circuit
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     1. electromagnetic pulse (EMP) - SGC-Hosting

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        Military equipment designed to survive EMP will probably work, ... What can be done to prevent damage due...