| Revision as of 08:22, 9 April 2003 editEgil (talk | contribs)Administrators20,816 edits Other units of energy← Previous edit | Revision as of 08:47, 9 April 2003 edit undo217.24.129.50 (talk) under the earth's gravityNext edit → | ||
| Line 3: | Line 3: | ||
| The '''joule''' (J) is the ] unit of ] and work, and is defined as 1 ] ]<sup>2</sup> ]<sup>-2</sup> = 1 ] ] = 1 ] ]. It is named in honour of the physicist ]. | The '''joule''' (J) is the ] unit of ] and work, and is defined as 1 ] ]<sup>2</sup> ]<sup>-2</sup> = 1 ] ] = 1 ] ]. It is named in honour of the physicist ]. | ||
| The work required to lift 102 g (e.g. a small apple) for one metre is 1 joule. | The work required to lift 102 g (e.g. a small apple) for one metre under the earth's gravity is 1 joule. | ||
| : 1 joule = 0.239 ]s. | : 1 joule = 0.239 ]s. | ||
Revision as of 08:47, 9 April 2003
The joule (J) is the SI unit of energy and work, and is defined as 1 kg m s = 1 N m = 1 W s. It is named in honour of the physicist James Prescott Joule.
The work required to lift 102 g (e.g. a small apple) for one metre under the earth's gravity is 1 joule.
- 1 joule = 0.239 calories.
See 1 E0 J for comparisons.
See also conversion of units, eV, kWh, TWh