big Homopolar Motor

Bigger...Faster The rotation is produced under the effect of the Lorenz force. The ring magnet are set up so that the magnetic field is vertical; the current enters the magnet through the upper side of the sphere magnet ant exits through the peripheral side of the ring magnet. When the current flows trough the radius of the ring magnet, it is almost perpendicular to the magnetic field and the resulting Lorenz force is tangential. This causes the rotation of the magnet. Once the magnet have been set in motion, the rotation continues for a long time, as there is almost no drag. This device could reach very high speeds, but it has to be very well equilibrated.
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