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Sturgeon, William (1783–1850)

William Sturgeon
British electrical engineer who demonstrated (1825) the first electromagnet capable of useful work. It consisted of a soft, iron core insulated with varnish and wound with 18 turns of bare copper wire; it was capable of supporting 4kg (9lb) and was powered by a single cell. Sturgeon also built an electric motor, invented the commutator, and the suspended coil galvanometer, and studied charges in clouds by flying kites.

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