Difference between revisions of "Energy"
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==External Links== | ==External Links== | ||
*[http://www.aim.org/wls/category/energy/ What Liberals Say - Category: Energy], [[Accuracy In Media]] | *[http://www.aim.org/wls/category/energy/ What Liberals Say - Category: Energy], [[Accuracy In Media]] | ||
| − | *[http://www.relativitycalculator.com/E=mc2.shtml E= | + | *[http://www.relativitycalculator.com/E=mc2.shtml E=mc<sup>2</sup>, Law of Inertia of Energy] |
[[Category:Physics]] | [[Category:Physics]] | ||
Revision as of 03:35, August 6, 2008
Energy is the ability to do work.[1] In physics, energy is a conserved quantity, and a closed system of interacting particles is known to always have the same value for its energy; this is known as the law of conservation of energy.[2]
Energy is also a source of usable heat or power.