Georg Ohm
DOI: 10.1063/PT.5.030920
It’s the birthday of Georg Ohm, who was born in 1789 in Erlangen, Germany. Ohm studied mathematics and went on to become a mathematics teacher. One of the schools he taught at, the Jesuit Gymnasium in Cologne, had a well-equipped science lab. There, Ohm conducted a series of experiments with electricity, whose properties he described mathematically in his book 1827, The Galvanic Circuit Investigated Mathematically. His most famous finding -- the direct proportionality between voltage and current in a conductor -- is known as Ohm’s law.
Date in History: 16 March 1789