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Value SI symbol Name 10 −1 J dJ decijoule 10 1 J daJ decajoule 10 −2 J cJ centijoule 10 2 J hJ hectojoule 10 −3 J mJ: millijoule: 10 3 J kJ: kilojoule: 10 −6 J μJ: microjoule: 10 6 J MJ: megajoule: 10 −9 J nJ: nanojoule: 10 9 J GJ: gigajoule: 10 −12 J pJ: picojoule: 10 12 J TJ: terajoule: 10 −15 J fJ femtojoule 10 15 J PJ ...
The British imperial units and U.S. customary units for both energy and work include the foot-pound force (1.3558 J), the British thermal unit (BTU) which has various values in the region of 1055 J, the horsepower-hour (2.6845 MJ), and the gasoline gallon equivalent (about 120 MJ). Log-base-10 of the ratios between various measures of energy
List of orders of magnitude for energy; Factor (joules) SI prefix Value Item 10 −34: 6.626 × 10 −34 J: Energy of a photon with a frequency of 1 hertz. [1]8 × 10 −34 J: Average kinetic energy of translational motion of a molecule at the lowest temperature reached (38 picokelvin [2] as of 2021)
An electronvolt is the amount of energy gained or lost by a single electron when it moves through an electric potential difference of one volt.Hence, it has a value of one volt, which is 1 J/C, multiplied by the elementary charge e = 1.602 176 634 × 10 −19 C. [2]
In particular Joule had experimented on the amount of mechanical work generated by friction needed to raise the temperature of a pound of water by one degree Fahrenheit and found a consistent value of 778.24 foot pound force (4.1550 J·cal −1). Joule contended that motion and heat were mutually interchangeable and that, in every case, a given ...
Also electronvolts may be used, 1 eV = 1.602×10 −19 Joules. Electrostatic potential energy of one point charge One point ... where, for each i value, V ...
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James Prescott Joule (/ dʒ uː l /; [1] [2] [a] 24 December 1818 – 11 October 1889) was an English physicist. Joule studied the nature of heat and discovered its relationship to mechanical work . This led to the law of conservation of energy , which in turn led to the development of the first law of thermodynamics .