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Peltier effect

[pel-tyey] /ˈpɛl tyeɪ/
noun, Physics.
1.
the change in temperature of either junction of a thermocouple when a current is maintained in the thermocouple and after allowance is made for a temperature change due to resistance.
Origin
1855-1860
1855-60; named after Jean C. A. Peltier (1785-1845), French physicist who discovered it
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for Peltier effect

Peltier effect

/ˈpɛltɪˌeɪ/
noun
1.
(physics) the production of heat at one junction and the absorption of heat at the other junction of a thermocouple when a current is passed around the thermocouple circuit. The heat produced is additional to the heat arising from the resistance of the wires Compare Seebeck effect
Word Origin
C19: named after Jean Peltier (1785–1845), French physicist, who discovered it
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for Peltier effect

the cooling of one junction and the heating of the other when electric current is maintained in a circuit of material consisting of two dissimilar conductors; the effect is even stronger in circuits containing dissimilar semiconductors. In a circuit consisting of a battery joined by two pieces of copper wire to a length of bismuth wire, a temperature rise occurs at the junction where the current passes from copper to bismuth, and a temperature drop occurs at the junction where the current passes from bismuth to copper. This effect was discovered in 1834 by the French physicist Jean-Charles-Athanase Peltier

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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