Excerpt from An Investigation of Rotations Produced by Current Form a Single-Phase Alternator: A Thesis
Christmas Day, 1821, marks the primary production of magnetic rotation, when Michael Faraday1 (17 91 - 1867 the greatest experimentalist of the nineteenth century in electricity and magnetism, obtained the revolution of a magnet around an electric current.
This first electro magnetic rotation was produced by placing a small magnet in mercury, one end being weighted with platinum to keep it in an upright position, and passing a cur rent down through the mercury in a manner indicated by Fig. 1.
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