Difference between revisions of "Joule"
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| − | A '''Joule''' (abbreviated J) is the [[Système international|metric]] measure of [[work]], named for [[James Prescott Joule]] for his work on the relationship between [[heat]], [[electricity]] and [[work]]. | + | A '''Joule''' (abbreviated J) is the [[Système international|metric]] measure of [[work]], named for [[James Prescott Joule]] for his work on the relationship between [[heat]], [[electricity]] and [[work]]. It is defined to be the amount of energy it takes to move an object using a 1N force across a distance of 1m, as <math>W = \int(\vec F \cdot \hat T)ds</math>. Note that a Joule is equal to a Newton-meter, it is only specifically used to denote work, energy, and heat, as torque has the same dimensions as energy, but it is measured in meters-Newton rather than Joules, as <math>\vec \tau = \vec r \times \vec F</math>. |
==See also== | ==See also== | ||
Latest revision as of 19:54, 14 January 2025
A Joule (abbreviated J) is the metric measure of work, named for James Prescott Joule for his work on the relationship between heat, electricity and work. It is defined to be the amount of energy it takes to move an object using a 1N force across a distance of 1m, as 
. Note that a Joule is equal to a Newton-meter, it is only specifically used to denote work, energy, and heat, as torque has the same dimensions as energy, but it is measured in meters-Newton rather than Joules, as 
.
See also
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