Georg Simon Ohm was a German mathematician and physicist. He used the newly invented electric cell and other equipment that he had to devise himself to investigate the relationship between the potential difference across a conductor and the current through the conductor.
In 1827 he published his findings — Die galvanische Kette, mathematisch bearbeitet (The Galvanic Circuit, Investigated Mathematically) — in which he showed that the current through a wire was proportional to the potential difference across it, the relationship now known as Ohm’s law. Although this work was not recognised as important at the time, it was later acknowledged by the Royal Society through the award of the Copley Medal in 1841 for an ‘outstanding achievement in research in any branch of science’.
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