[Ru Ko (OP)]

When a powerful  rare earth magnet is dropped through a copper pipe it moves very slowly through it. Is it because the electric/magnetic field generated by the magnet in the copper pipe is in opposition to the magnetic field (like pole) or is it attraction (unlike pole) to the magnet? In other words is it attraction or repulsion that slows the magnet?

[Kryptid]

It's both attraction and repulsion at the same time:

[Ru Ko (OP)]

Thanks very. much.

[Petrochemicals]

Thanks for that both, this is facinating,

I have found this one, given that the magnet does not drop, where is the heat energy coming from ?

Edit

It may be that noise in the background i hadnt noticed before.

[Bored chemist]

where is the heat energy coming from ?

It may be that noise in the background i hadnt noticed before.

The noise and the heat come from a high power radio frequency oscillator.


This version of the video is less misleading.