William John Mac·quorn [muh-kwawrn] /məˈkwɔrn/, 1820–70, Scottish engineer and physicist.
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A scale of absolute temperature having the same degree increments as those of the Fahrenheit scale, in which the freezing point of water is 491.69° and the boiling point is 671.69°. A temperature in degrees Fahrenheit is converted to a temperature in degrees Rankine by the addition of 459.67°.
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