The unit of electrical resistance in the International System of Units, equal to the resistance of a conductor in which a current of one ampere is produced by a potential difference of one volt.
Named after German physicist Georg Simon Ohm (1789-1854), who discovered the relationship between voltage, current, and resistance known as Ohm's Law. The unit was officially adopted in 1881 at the International Electrical Congress in Paris.
Ohm's discovery was initially rejected by the German scientific establishment, and his work was so poorly received that he nearly quit physics altogether. Ironically, Ohm's Law (V=IR) is now considered one of the most fundamental principles in electrical engineering and is probably the first equation any electronics student learns.
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