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NotAnotherEmpire t1_ixlpggf wrote

Reply to comment by Sidoplanka in If a solar flare were to wipe most if not all technology, what plans/countermeasure could be taken to slow rebuild things like the internet? by Zak_the_Reaper

An electromagnetic storm does its damage by inducing current. This is primarily damaging to long lines and their transformers.

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Sidoplanka t1_ixlpujn wrote

And why wouldn't that damage the smaller systems?

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Nytonial t1_ixlxsqb wrote

Solar flare x 50km of overhead cable = 50,000 volt spike

Solar flare x 3mm of phone PCB trace = 0.03v spike

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