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date: 04 August 2020

calorie (gram-calorie, petit calorie, small calorie) 

Source:
A Dictionary of Weights, Measures, and Units
Author(s):

Donald Fenna

heat energy. 4.1868 J (3.968 322 93∼ × 10-3 B.t.u.), but also thermochemical calorie calth = 4.184 J.Although widely known as a unit for indicating the energy content of foodstuffs (and hence, to some extent, their ‘fattening power’), the calorie is technically a measure of heat energy. Its use in nutrition corresponds to its use in physics, both being a measure of energy; however, the ‘calorie’ of the food packet is usually a ... ...

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