• niktemadur@lemmy.world
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    4 days ago

    Take a copper wire, twist it into a nice long coil, then take a rod of magnetized iron and give it the ol’ in-out… in-out… in-out… or something like that-ish?

    • waigl@lemmy.world
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      3 days ago

      Right, one of those copper wires that naturally just lie around from growing in copper wire trees…