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Joule-Thomson effect

[jool-tom-suh n, joul-] /ˈdʒulˈtɒm sən, ˈdʒaʊl-/
noun, Thermodynamics.
the change of temperature that a gas exhibits during a throttling process, shown by passing the gas through a small aperture or porous plug into a region of low pressure.
Compare free expansion.
Origin of Joule-Thomson effect
1895-1900; named after J. P. Joule and Sir W. Thomson Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for Joule-Thomson effect

Joule-Thomson effect

a change in temperature of a thermally insulated gas when it is forced through a small hole or a porous material. For each gas there is a temperature of inversion above which the change is positive and below which it is negative Also called Joule-Kelvin effect
Word Origin
C20: named after James Prescott Joule and Sir William Thomson, 1st Baron Kelvin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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