Eddy currents. Why does a magnet move slowly down a copper tube? | Hacker News

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		nightfly on April 27, 2020 \| parent \| context \| favorite \| on: Ask HN: What scientific phenomenon do you wish som... Eddy currents. Why does a magnet move slowly down a copper tube?

OkayPhysicist on April 27, 2020 [–]

A changing magnetic field induces a current in a material, which creates an opposing magnetic field which slows the moving magnet.

carapace on April 27, 2020 | [–]

The kinetic energy turns into heat due to resistance to the induced current?

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