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Michael Faraday invented electrical generators. While he taught a class he announced to the class, "No relationship exists between electricity and magnetism." He laid a wire across a compass, connected it to a battery, and the pointer did not move.After class a few students looked at the experiment. They moved the wire. They reconnected the battery. The needle moved.
Mr Faraday then thought if electricity through a wire can make a magnet move, perhaps it is possible to make a wire moving through a magnetic field produce electricity. He build a little device and produced a spark. He produced the first generator.
Thomas Edison hired Telsa at General Electric and they greatly improved the efficiency of Faraday's generator and made it a commercial success.
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