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Joule equivalent
Joule equivalent[′jül i‚kwiv·ə·lənt] (thermodynamics) The numerical relation between quantities of mechanical energy and heat; the present accepted value is 1 fifteen-degrees calorie equals 4.1855 ± 0.0005 joules. Also known as mechanical equivalent of heat. joule equivalent
Joule e·quiv·a·lent (J), (jūl), the dynamic equivalent of heat; the amount of work converted to heat that will raise the temperature of 1 pound of water 1°F is 778 foot-pounds; in metric units, 1 calorie, which raises 1 g of water 1°C, equals 4.184 × 107 dyne-centimeters, or 4.184 J. [James P. Joule] joule e·quiv·a·lent (J) (jūl ē-kwiv'ă-lĕnt) The dynamic equivalent of heat; the amount of work converted to heat that will raise the temperature of 1 pound of water 1°F is 778 foot-pounds; in metric units, 1 calorie, which raises 1 gram of water 1°C, equals 4.184 × 107 dyne-centimeters, which equals 4.184 joules. [James P. Joule]Joule, James P., English physicist, 1818-1889. joule - Synonym(s): unit of heatJoule equivalent - the dynamic equivalent of heat. |