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Speaker:
Jaroslav J. Kopernicky
Permanent Magnet Rotates Plasma

Date: 2011-07-09 Time: 09:00 - 17:00 9.9 (7 years 6 months ago)

Where: College Park, MD, United States Venue: Stamp Student Union


Description

Does the magnetic field of a permanent magnet rotate in accordance with Faraday's ?right hand rule?? A double-walled glass filled with neon gas can test the behavior of neon plasma near a magnet. The base of the glass is equipped with electronics causing a neon plasma glow. The magnet with its north (south) pole toward the wall of the glass causes the plasma to bend (counter-)clockwise, in accordance with the Faraday's wire experiment. Do spinning charges, aligned inside of the magnet, form the magnetic field that consequently continues to spin outside of the magnet? If magnetic field ?lines? really spin outside of the magnet, then, when the magnet is inserted into the top of the glass, the plasma should rotate in the opposite direction. When the magnet is inserted further inside, the whole glass shines with the spontaneously rotating plasma. Apparently then each field line is generated separately by spinning charges inside the magnet, where the spins of the charges must be aligned and synchronized.