Difference between revisions of "Joule"

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[[Joule]]
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The '''joule'' is a derived SI unit of energy that was derived from the name of the English physicist, James Prescott Joule (the first to discover the first law of thermodynamics and proposed the mechanical theory of heat). It is 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. It may also be defined as the energy dissipated as heat as one ampere electric current passes through a resistance of one ohm for one second. A joule may also be the work required to produce 1 watt of power occurring for 1 second (Watt⋅second). One joule is roughly 0.001 btu. One [[calorie]] is about 4 joules. Symbol: J.
  
(Science: [[unit]]) [[si]] [[unit of energy]].
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== References ==
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# McGraw-Hill Dictionary of Physics, Fifth Edition (1997). McGraw-Hill, Inc., p. 224.
  
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]].
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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.
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© Biology Online. Content provided and moderated by '''[https://www.biology-online.org/about/ Biology Online Editors]'''
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Latest revision as of 01:58, 20 October 2019

The 'joule is a derived SI unit of energy that was derived from the name of the English physicist, James Prescott Joule (the first to discover the first law of thermodynamics and proposed the mechanical theory of heat). It is 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. It may also be defined as the energy dissipated as heat as one ampere electric current passes through a resistance of one ohm for one second. A joule may also be the work required to produce 1 watt of power occurring for 1 second (Watt⋅second). One joule is roughly 0.001 btu. One calorie is about 4 joules. Symbol: J.

References

  1. McGraw-Hill Dictionary of Physics, Fifth Edition (1997). McGraw-Hill, Inc., p. 224.



© Biology Online. Content provided and moderated by Biology Online Editors