A ball bearing motor is an unusual electric motor that is constructed as follows: Electric motors of various sizes. ...
Take a short hollow copper pipe and fit 2 ball bearings on either end. Clamp the bearings outer races on a insulating level surface. Connect a car battery to the 2 outer races. This is a outright short circuit across the battery, so use very thick cables. Spin the copper tube. The motor will start rotating. It may even take the skin off your thumb if you are not careful. There are many explanations for this motor but none of then is satisfactory or complete.
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