14 Mar, 2013
Magnet and copper
PRESENTATION: A Neodymium magnet is allowed to free-fall on a copper surface, and the partial deceleration of the magnet fall of the magnet can be observed. This is due to the induced electric currents that oppose the cause that creates them. By cooling the copper plate with liquid nitrogen its resistance will decrease and the effect will be more noticeable.
- Spherical Rare-Earth Magnets in Introductory Physics, Al Adams, Phys. Teach. 45, 409 (2007)
- Quantitative demonstration of Lenz’s law, O. Romulo Ochoa, Frank Kolp, and Joel T. Handler, Phys. Teach. 36, 50 (1998)