Thomson effect

the tendency of unevenly heated segments of a strip of a conductor to increase or decrease in temperature differences when an electric current is passed through the strip.
[named after Sir W. THOMSON]

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      the evolution or absorption of heat when electric current passes through a circuit composed of a single material that has a temperature difference along its length. This transfer of heat is superimposed on the common production of heat associated with the electrical resistance to currents in conductors. If a copper wire carrying a steady electric current is subjected to external heating at a short section while the rest remains cooler, heat is absorbed from the copper as the conventional current approaches the hot point, and heat is transferred to the copper just beyond the hot point. This effect was discovered (1854) by the British physicist William Thomson (Lord Kelvin).

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Universalium. 2010.

Look at other dictionaries:

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  • thomson effect — noun or thomson heat Usage: usually capitalized T : a redistribution of temperature differences along an otherwise homogeneous strip of metal due to an electric current passing through it called also Kelvin effect; see thomson electromotive force …   Useful english dictionary

  • Thomson effect — Смотри эффект Томсона …   Энциклопедический словарь по металлургии

  • Thomson effect — /ˈtɒmsən əfɛkt/ (say tomsuhn uhfekt) noun the production of a gradient of electrical potential along a conducting metal wire or strip which is subjected to a temperature gradient along its length. {named after Sir William Thomson1, Lord Kelvin} …   Australian English dictionary

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