“Back in the 1940s, when we started firing off atomic bombs to test them, this pulse wave was first noticed. Not much back then with those primitive weapons, but it was there. And here’s the key thing: there were no solid-state electronics back in the 1940s, everything was still vacuum tubes, so it was rare for the small pulses set off by those first bombs to damage anything. “We finally figured out that when you set off a nuke in space, that’s when the EMP effect really kicks in, as the energy burst hits the upper atmosphere. It becomes like a pebble triggering an avalanche, the electrical
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