Tag Archives: screw

Levitron

My attempt at a Levitron

The Levitron (R) is a small spinning top like magnet that is fully hovering in mid air unsupported. It is rather critical in its dimensions and operation. This requires adjustment by very small weight changes. It is commercially made and sold as a science toy. See their site for details.
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Homopolar Motor

Homopolar motor running

Homopolar motor made with 4 common household parts.

This homopolar motor has 4 components and takes seconds to make. Running here at 5800 RPM. It ran for 2:35 minutes once the power is off because the bearing is only a point with much of the weight taken off by gravity.
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