|1.||Ernst Werner von (ɛrnst ˈvɛrnər fɔn). 1816--92, German engineer, inventor, and pioneer in telegraphy. Among his inventions are the self-excited dynamo and an electrolytic refining process|
|2.||his brother, Sir William, original name Karl Wilhelm Siemens. 1823--83, British engineer, born in Germany, who invented the open-hearth process for making steel|
siemens sie·mens (sē'mənz)
n. pl. siemens
A unit of electrical conductance in the International System of Units, equal to one ampere per volt.
unit of electrical conductance. In the case of direct current (DC), the conductance in siemens is the reciprocal of the resistance in ohms (S = amperes per volts); in the case of alternating current (AC), it is the reciprocal of the impedance in ohms. A former term for the reciprocal of the ohm is the mho (ohm spelled backward). It is disputed whether the siemens was named after the German-born engineer-inventor Sir William Siemens (1823-83) or his brother, the electrical engineer Werner von Siemens (1816-92).
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