5G30.45 - Four and Nine Magnet Diamagnetic Levitator
Align the 9 magnets so that when they are facing up and alternating North/South with North poles on all corners of the square. Place the graphite above the center of the magnet square. It should float quite stably 1 or 2 mm above the magnets in a potential well that is produced by the quadrupole effect of the four South facing magnets.
A 4 magnet array ( 2 X 2 cube ) also works quite well for this demonstration.
- Ron Edge, "A Simple Diamagnetic Levitation Experiment", TPT, Vol. 41, # 2, p. 122, Feb 2003.
- Simon Quellen Fields, "Levitating Pyrolytic Graphite", Gonzo Gismos, p. 24 - 28.
- Theodore Gray, "Ignorance=Maglev=Bliss", Popular Science, Feb. 2004, p. 90.
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