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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # OM Georg Simon (Ohm Georg Simon)

( German physicist.)

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Biography OM Georg Simon (Ohm Georg Simon)
(1787-1854)
Born March 16, 1787 in Erlangen in the family locksmith. He studied at University of Erlangen (1805-1806). He taught mathematics and physics at various high schools. Defended his doctoral dissertation University of Erlangen. He taught in Bamberg, Cologne, Berlin. Professor of the Polytechnic School in Nuremberg, Munich University. Most of the discoveries made ohms for a 10-year period of its work in a school in Cologne. In 1826, the experimentally discovered the fundamental law of the circuit that connects between a power current, voltage and resistance. In the mathematical representation of Ohm's law is expressed by the simple formula V = IR, where V - potential difference (in volts) at the ends of the conductor in an unbranched chain of DC, I - current (in amperes), R - resistance of the conductor (in ohms). Ohm also showed that the resistance depends on the material the conductor is directly proportional to its length and inversely proportional to the cross-sectional area. In 1827, attempted to bring the law of the theoretical assumptions, based on the analogy between the spread of electricity and heat. Om compared the law to the electric current with the law for heat flow, Fourier formulated, by analogy with the temperature difference introduced the concept of 'the fall of the electric stress'. He owns the concept of "electromotive force" (emf), 'conductivity'. In 1830 Ohm performed the first measurements of emf. current source.
More recent work devoted to Ohm Acoustics, in particular the study of complex sounds (presence of overtones). In 1841 the scientist was awarded the Copley Medal, in 1842 became a member of the Royal Society.

Om died in Munich July 7, 1854.

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