re: Perpetual motion perhaps?
It's just the motion of the air. In a vacuum, it would spin for a LONG time, but I think there are some kind of irregularities in the magnetic fields that would slow it to a stop eventually.
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It's just the motion of the air. In a vacuum, it would spin for a LONG time, but I think there are some kind of irregularities in the magnetic fields that would slow it to a stop eventually.