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Revision as of 05:09, 24 January 2003 by AxelBoldt (talk | contribs) (rough intuition)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)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.