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Seebeck effect

Generation of a voltage in a circuit containing two different metals, or semiconductors, by keeping the junctions between them at different temperatures. Discovered by the German physicist Thomas Seebeck (1770–1831), it is also called the thermoelectric effect, and is the basis of the thermocouple. It is the opposite of the Peltier effect (in which current flow causes a temperature difference between the junctions of different metals).

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The colours of the flag date from Napoleon's invasion in 1796. The design is based on the French tricolour. Effective date: 19 June 1946.

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