Peltier effect

/pel"tyay/, Physics.
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.
[1855-60; named after Jean C. A. Peltier (1785-1845), French physicist who discovered it]

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      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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Universalium. 2010.

Look at other dictionaries:

  • Peltier effect — Pel tier ef*fect [After Jean C. A. Peltier, French physicist, the discoverer.] (Elec.) The production or absorption of heat at the junction of two metals on the passage of a current. Heat generated by the passage of the current in one direction… …   The Collaborative International Dictionary of English

  • Peltier effect — [pel′tyā΄, pel tyā′] n. [after J. Peltier (1785 1845), Fr physicist] Elec. the liberation or absorption of heat at a junction of two unlike metals through which an electric current is passing …   English World dictionary

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  • Peltier effect — [ pɛltɪeɪ] noun Physics an effect whereby heat is given out or absorbed when an electric current passes across a junction between two materials. Origin C19: named after the French scientist Jean Peltier …   English new terms dictionary

  • Peltier effect — /ˈpɛltieɪ əˌfɛkt/ (say pelteeay uh.fekt) noun the heat evolved or absorbed when an electric current flows across the junction between two different metals or semiconductors. {named after CA Peltier, 1785–1845, French physicist} …   Australian English dictionary

  • peltier effect — ˈpel|tyā noun Usage: usually capitalized P Etymology: after Jean C. A. Peltier died 1845 French physicist who discovered it : the production or absorption of heat at the junction of two metals on the passage of a current …   Useful english dictionary

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