mechanical equivalent of heat

mechanical equivalent of heat

noun
(in any system of physical units) the number of units of work or energy equal to one unit of heat, as 4.1858 joules, which equals one small calorie.

Origin:
1835–45

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World English Dictionary
mechanical equivalent of heat
 
n
physics J a factor for converting units of energy into heat units. It has the value 4.1868 joules per calorie

Collins English Dictionary - Complete & Unabridged 10th Edition
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