Blame it on Eddy
“Eddies,” said Ford, “in the space-time continuum.”
“Ah,” nodded Arthur, “is he. Is he.”
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Everyday Electromagnetism
This time, though, Eddies in the penny. And he enforces Lenz’s law.
You can see a similar effect if you drop a magnet down a copper pipe, because the eddy currents [...]