3 сент 1821 г. - Michael Faraday demonstrates the principle of An electric motor, 1821, 3rd of september. An electric motor is a device which is being Sent electricity through a wire which Creates a magnetic field around it, causing The wire to rotate. At the time it had No useful application but now because of The invention, we have hair driers, industrial Fans, disk drives and more.
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Дата:
3 сент 1821 г.
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~ 203 г назад