The kelvin (symbol: K) is a unit increment of temperature and is one of the seven SI base units. The Kelvin scale is a thermodynamic temperature scale where absolute zero ? the coldest possible temperature ? is zero kelvins (0 K).The Kelvin scale and the kelvin are named after the Northern Irish physicist and engineer William Thomson, 1st Baron Kelvin (1824 ? 1907), who wrote of the need for an ?absolute thermometric scale.?
Definition of kelvin
The kelvin unit and its scale, by international agreement, are defined by two points: absolute zero, and the triple point of specially prepared water (VSMOW) . This definition also precisely relates the Kelvin scale to the Celsius scale. Absolute zero?the temperature at which nothing could be colder and minimal heat energy remains in a substance?is defined as being precisely 0 K and ?273.14 °C. The triple point of water is defined as being precisely 273.14 K and 0.01 °C. This definition