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Germany. In May 1827, Georg Simon Ohm published Die galvanische Kette, mathematisch bearbeitet, which contained the relationship between electromotive force, current, and resistance later known as Ohm's law. Ohm obtained the experimental data from which he first formulated his law on 8 January 1826.
Ohm was awarded the Copley Medal in 1841.
The term 'Ohm' was tagged as the unit of electrical resistance in 1872.