Ok then lets say it has to deliver above 2000 joule of energy on target at 100 yards and has to have a premium bullet. The Fate of the Kilo Weighs Heavily on the Minds of Metrologists Much is riding on the outcome: the joule, watt, volt, farad, weber and ohm are only some of the units derived in part from the kilo. latest science and technology news storiesĪ joule is a watt-second, so this capacitor could deliver one watt for 0.4165 seconds, or 0.4165 watts for one second, or any other combination in which watts times seconds equals 0.4165. noun English physicist who established the mechanical theory of heat and discovered the first law of thermodynamics (1818-1889)Īn average of 420 joules of ultraviolet laser energy, known as 3-omega, was achieved for each beamline, for a total energy of more than 80 kilojoules (a joule is the energy needed to lift a small apple one meter against the Earth's gravity).noun 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.Symbol: Jįrom WordNet 3.0 Copyright 2006 by Princeton University. Also equal to the energy of one watt of power for a duration of one second. noun In the International System of Units, the derived unit of energy, work and heat the work required to exert a force of one newton for a distance of one metre.The absolute joule is approximately equal to 0.737562 foot pounds, 0.239006 gram-calories (small calories), and 3.72506 x 10-7 horsepower-hours, and 0.000948451 B.t.u.įrom Wiktionary, Creative Commons Attribution/Share-Alike License. The international joule is slightly larger, being 1.000167 times the absolute joule. system of units), and is equivalent to one watt-second, the energy expended in one second by an electric current of one ampere in a resistance of one ohm also called the absolute joule. noun (Physics.) A unit of work which is equal to 107 ergs (the unit of work in the C. It was formally adopted as a unit by the international Congress in Chicago (1893) and was legalized in the United States in 1894.įrom the GNU version of the Collaborative International Dictionary of English. noun A practical unit of work or energy equal to 107 ergs, 0.10197 + kilogram-meters, 0.2388+ calories, or 0.7376+ foot-pounds.noun An electrical unit proposed by Siemens.noun A unit of energy equal to the work done when a force of one newton acts through a distance of one meter.noun A unit of electrical energy equal to the work done when a current of one ampere is passed through a resistance of one ohm for one second.noun The International System unit of electrical, mechanical, and thermal energy.From The American Heritage® Dictionary of the English Language, 5th Edition.
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