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Joule The SI unit of energy is the joule. Defined as: - 1 joule is the work done by a force of 1 newton moving a distance of 1 metre in the direction of the force.
- It may also be defined in electrical terms as:
- the amount of energy needed to sustain 1 amp for 1 sec in a 1-ohm resistance.
Named after James Prescott Joule, one of the first to measure the "rate of exchange" between mechanical energy and heat.
| Conversions | | | | | | | | 1 calorie | = | 4.1868 joules | | 1 kilowatt hour | = | 3.6x106 J | | 1 therm (EEC) | = | 105.506x106 J | | 1 therm (US) | = | 105.4804x106 J | | 1 thermie | = | 4.185407x106 J | | 1 ft lb | = | 1.3558179 J | | 1 Btu | = | 1055 J | | 1 electron volt | = | 1.602x10-19 J | | 1 joule | = | 107 ergs | | | | |
See also: Calorie, Energy, Erg, Foot Pound, Watt, Work.
  
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