A homopolar motor uses a magnetic field and direct current to create motion or generate electricity. It has a permanent magnet, metal disc, and shaft. The Barlow wheel is a variant that uses a rotating metal disc connected to a battery and suspended above mercury. Homopolar motors have practical applications in marine propulsion and linear […]
A homopolar generator uses a rotating conductive disk in a static magnetic field to produce direct current. It was invented by Michael Faraday in 1831 and has been improved with the use of multiple magnets to increase efficiency. While commonly used for demonstration purposes, it can produce large amounts of current but has limited practical […]
