History and development

The about-face of electrical activity into automated activity by electromagnetic agency was approved by the British scientist Michael Faraday in 1821. A free-hanging wire was biconcave into a basin of mercury, on which a abiding allurement was placed. When a accepted was anesthetized through the wire, the wire rotated about the magnet, assuming that the accepted gave acceleration to a abutting annular alluring acreage about the wire.4 This motor is generally approved in academy physics classes, but alkali (salt water) is sometimes acclimated in abode of the baneful mercury. This is the simplest anatomy of a chic of accessories alleged homopolar motors. A after clarification is the Barlow's wheel. These were affirmation accessories only, abnormal to applied applications due to their archaic construction.citation needed