joule | has symbol J | |
is named after J. P. Joule | |
has proposer British Association | |
has unit N·m | |
has equivalent 1 watt second (electrical units) | |
has equivalent 107 ergs | |
has equivalent 2.78 × 10-7 kW h | |
has equivalent 9.47 × 10-4 Btu | |
has equivalent 9.47 × 10-9 therm | |
has approval agency International Conference on Weights and Measures | |
has base unit m2kg·s-2 | |
has approval date 1948 | |
has proposal date 1888 | |
has definition Unit of work which is equal to a force of one newton acting over a distance of one metre in the direction of the force. It was recognized by the IEC in 1889. The specific heat of water at 15 °C is 4185.5 joule (kg °C)-1, a figure previously always associated with J, the mechanical equivalent of heat. | |
has definition Unit of energy, work, or quantity of heat. 1 J is equal to a force of 1 newton acting over a distance of 1 meter. 1 J = 107 ergs. | |
is an instance of energy unit | |
is an instance of named derived SI unit | |
energy unit | is a unit of energy | |
unit | has historical origin | |
represents | |
SI unit | is an acronym for Syteme Internationale | |