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Uploaded by MOSEMwp7 on Feb 10, 2009
A rotating (not magnetic) aluminium disc is stopped by a strong magnet.A MOSEM video by Wim Peeters, University of Antwerp
Science & Technology
Standard YouTube License
There must be no ferromagnetic material in the disc. The braking effect comes from Eddy currents, generated from the induction: A conductor moves in the magnetic field. So the disc must be a conductor, but not a ferromagnetic material.
MOSEMwp7 3 years ago
there has to be some ferrous metal in it somewhere....
Spas117 3 years ago
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There must be no ferromagnetic material in the disc. The braking effect comes from Eddy currents, generated from the induction: A conductor moves in the magnetic field. So the disc must be a conductor, but not a ferromagnetic material.
MOSEMwp7 3 years ago