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Home > Kelvin

The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units. It is defined by two facts: zero kelvin is absolute zero (when molecular motion stops), and one kelvin is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water (0.01  °C). The Celsius temperature scale is now defined in terms of the kelvin.

The kelvin is named after the British physicist and engineer William Thomson, 1st Baron Kelvin.

The word kelvin as an SI unit is correctly written with a lowercase k (unless at the beginning of a sentence), and is never preceded by the words degree or degrees, or the symbol °, unlike Fahrenheit, or Celsius. This is because the latter are scales of measurement, whereas the kelvin is a unit of measurement. When the kelvin was introduced in 1954 (10th General Conference on Weights and Measures (CGPM), Resolution 3, CR 79), it was the "degree Kelvin", and written °K; the "degree" was dropped in 1967 (13th CGPM, Resolution 3, CR 104).

Note that the symbol for the kelvin unit is always a capital K and never italicised. Unlike temperature scales which use the degree symbol, there is a space between the number and the K, as with all other SI units.

Conversion factors

In a thermodynamic system, the energy carried by the particles is proportional to the absolute temperature, where the constant of proportionality is the Boltzmann constantThe Boltzmann constant k or k is the physical constant relating temperature to energy. It is named after the Austrian physicist Ludwig Boltzmann, who made important contributions to the theory of statistical mechanics, in which this constant plays a cruci. As a result, it is possible to determine the temperature of particles with a certain energy; or to calculate the energy of particles at a certain temperature:

electron volts to kelvin

kelvin to electron volts

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KelvinThe kelvin (symbol: K is the SI unit of temperature, and is one of the seven SI base units. It is defined by two facts: zero kelvin is absolute zero (when molecular motion stops), and one kelvin is the fraction 1/273. 16 of the thermodynamic temperature o Kelvin AndersonKelvin Anderson is a Canadian football player. 3rd in rushing in the Canadian Football League with 653 yards. Last year he ran for over 1,000 for the seventh straight season, as he had 1,074 yards and four touchdowns in 18 games with the Calgary Stampeder Kelvin HopkinsKelvin Peter Hopkins (born 22 August 1941) is an English politician, and Labour member of Parliament for Luton North. He was first elected in the 1997 general election, but is a left-winger, being a member of the Socialist Campaign Group. Hopkins, Kelvin. Kelvin MacKenzieKelvin MacKenzie (born October 22, 1946) is a media figure in the United Kingdom. He is best known for his role as editor of The Sun newspaper from 1981 to 1994 and is remembered as the man responsible for the paper's coverage of the Hillsborough disaster Kelvinside AcademyKelvinside Academy is a private day school in the City of Glasgow, founded in 1878. As of 2004 it has a capacity of 650 pupils and spans two years of Junior Start ( kindergarten), six years of Junior School ( primary school), and seven years of Senior Sch KelvinbridgeKelvinbridge is a bridge that crosses the River Kelvin in the city of Glasgow, Scotland. This section of the river used to be the boundary between Glasgow and Hillhead until the latter area was incorporated into the city. Some locals refer to the immediat Kelvin-Helmholtz instability Kelvin Thomson Kelvin-Helmholtz mechanism Kelvindale Kelvin Lancaster Kelvin wave Kelvin Goertzen Kelvinator Kelvingrove Art Gallery and Museum