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joule |
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joule (j  l, joul), abbr. J, unit of work work, in physics and mechanics, transfer of energy by a force acting to displace a body. Work is equal to the product of the force and the distance through which it produces movement...... Click the link for more information. or energy energy, in physics, the ability or capacity to do work or to produce change. Forms of energy include heat , light , sound , electricity , and chemical energy. ..... Click the link for more information. in the mks system mks system, system of units of measurement based on the metric system and having the meter of length, the kilogram of mass, and the second of time as its fundamental units. ..... Click the link for more information. of units, which is based on the metric system metric system, system of weights and measures planned in France and adopted there in 1799; it has since been adopted by most of the technologically developed countries of the world. ..... Click the link for more information. ; it is the work done or energy expended by a force of 1 newton acting through a distance of 1 meter. The joule is named for James P. Joule. A unit of energy in the MKS system. It is equal to 10,000,000 ergs in the CGS system. Surge protectors are often given joule ratings, but this refers only to the amount of energy they can absorb, not what gets through. See CGS system. |
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? Mentioned in | ? References in periodicals archive | ||
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| The generation rate for crop residues in the field plus agricultural processing residues amounts to about 790 million metric tons per year, or approximately 10 exajoule (EJ). In 1800, one exajoule of energy (the energy content of 30 million tons of coal) produced $19 billion in economic value in the United States. The United States alone is now saving about 1 exajoule of energy - about 1 percent of total U. |
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Exajoule
