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Joule-Thomson effect

noun Joule-Thom·son effect

Definition of Joule-Thomson effect

: the change in temperature of a gas on expansion through a porous plug from a high pressure to a lower one under adiabatic conditions, the observation of this change proving among other things that Joule's second law is only approximately true

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Origin and Etymology of joule-thomson effect

after J. P. Joule and Sir William Thomson (Lord Kelvin) †1907 British physicist

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