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nature 161, 192-193 (07 February 1948) | doi:10.1038/161192a0
Water Movements and Earth Currents: Electrical and Magnetic Effects
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IT is a consequence of Faraday's law of electromagnetic induction that when a large body of water moves in the presence of the earth's magnetic field, an electromotive force is set up across the direction of motion. Faraday himself said that the tidal streams in the English Channel would generate electric currents across the channel, through the sea, and returning through the land beneath the water.
