What Is This Sorcery? You Have To See What Happens When You Drop A Magnet Down A Copper Tube

February 5, 2014

Okay so maybe it's not sorcery. This is actually Lenz's Law in action. The copper tube "sees" a changing magnetic field from the falling magnet. This changing magnetic field induces a current in the copper tube. The induced current in the copper tube creates its own magnetic field that opposes the magnetic field that created it.

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