Encyclopedia > Joule

  Article Content

Joule

The joule (J) is the SI unit of energy and work, and is defined as 1 kg m2 s-2 = 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

External link



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
James Milner

...     Contents James Milner James Milner(-1730) was Seigneur of Sark from 1723 to 1730. He was also bishop of Gloucester. He bought the island from ...