Thomson effect

Thomson effect

noun Physics.
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.

Origin:
named after Sir W. Thomson

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Thomson effect
 
n
physics the phenomenon in which a temperature gradient along a metallic (or semiconductor) wire or strip causes an electric potential gradient to form along its length
 
[named after Sir William Thomson, Lord Kelvin]

Collins English Dictionary - Complete & Unabridged 10th Edition
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thomson effect

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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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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