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Joule

(Science: unit) si unit of energy.

1 joule = 1E7 ergs = 1 watt of power occurring for one second. 1 joule is roughly 0.001 btu and 1 calorie is roughly 4 joules. There are 3.6 million joules in a kilowatt hour. A unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second.English physicist who established the mechanical theory of heat and discovered the first law of thermodynamics (1818-1889).A unit of [[energy.