Click on the image to view a QuickTime movie.

Two 'plugs' are dropped through a copper tube. One plug is made of iron, the other is made of a high-energy permanent magnet material. The iron plug drops through the tube in a 'normal' fashion, while the magnet plug takes a drastically longer time due to the force in response to the induced current in the tube wall.

Advanced option: Cool the tube in liquid nitrogen and compare the time of fall to the tube at room temperature.

This demo can be found in cabinet F on shelf 3 of the UCSD PUL Demo Room (WLH 2015).