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| The '''joule''' (J) is the ] unit of ] and work, and is defined as 1 kg m<sup>2</sup> s<sup>-2</sup> or 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> or 1 ] ]. It is named in honour of the physicist ]. | ||
| Very roughly, the work required to lift up an apple for one metre is about 1 joule. | |||
| See also ]. | See also ]. | ||
Revision as of 05:09, 24 January 2003
The joule (J) is the SI unit of energy and work, and is defined as 1 kg m s or 1 newton metre. It is named in honour of the physicist James Prescott Joule.
Very roughly, the work required to lift up an apple for one metre is about 1 joule.
See also conversion of units.