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A Question about an event that happened in the movie The Day After?

I would like a serious answer from a professional who would know about these things from being part of the military or etc.When the air burst missile exploded, everything electrical stopped working. At the end of the movie, the girl asked if the phones are working and the guy replied Are you kidding, they'll never be phones again.Is that a true statement? Can anything electrical ever work again?? Or did he say that because the world at the time in their point of view looked unrepairable ?Also, if I was in a well constructed fallout shelter with all my stuff and I wanted to save Computers, TV etc. will it get affected from the outside air burst missile? (I know a lot of people are gonna yell why keep those when you can't use electricity again after a nuclear war 1, I just wanted to know, 2 I could use them in the shelter if I have Generator batteries for room lighting and everything else)

Answer:

You should be concerned about protecting yourself,not your toys.A well constructed shelter (fashionable in the 50's)would keep you out of the Blast(maybe)but would not save you from the Gamma rays.Everything would be contaminated for hundreds of generations.Nothing would grow,water would be undrinkable.When and if you emerge from your shelter,what and who would you find?Back to the Stone age.Have you seen the series on Discovery,Life after PeopleIt would be awful if you survived.
You are referring to electromagnetic pulse. The strongest part of the pulse lasts for only a fraction of a second, but any unprotected electrical equipment — and anything connected to electrical cables, which act as giant lightning rods or antennas — will be affected by the pulse. Older, vacuum tube (valve) based equipment is much less vulnerable to EMP than newer solid state equipment; Soviet Cold War–era military aircraft often had avionics based on vacuum tubes due both to limitations in Soviet solid-state capabilities and a belief that the vacuum gear would survive better. On the other hand, the solid state PRC-77 VHF manpack radio survived extensive EMP testing. The earlier PRC-25, nearly identical except for a vacuum tube final, had been tested in EMP simulators but was not certified to remain fully functional.

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