Homopolar generator
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A homopolar generator is a DC electrical generator comprising an electrically conductive disc or cylinder rotating in a plane perpendicular to a uniform static magnetic field. A potential difference i
Faraday disc, the first homopolar generator
The remains of the ANU 500 MJ generator
Basic Faraday disc generator
Homopolar motor
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A homopolar motor is a direct current electric motor with two magnetic poles, the conductors of which always cut unidirectional lines of magnetic flux by rotating a conductor around a fixed axis so th
Homopolar generator
…Electric motor Homopolar motor Faraday paradox…
DIY simple homopolar motor made with a drywall screw, a battery cell, a wire, and a disk magnet. The magnet is on the screw head. The screw and magnet make contact with the bottom of the battery cell and are held together by the magnet's attraction. The screw and magnet spin, with the screw tip acting as a bearing.
Electromagnetic rotation experiment of Faraday, ca. 1821