Sir William Thomson, better known as Lord Kelvin of Largs, presented the temperature scale named after him later in 1848. This followed research in the field of thermodynamics. Lord Kelvin and Rankine recognized that nature itself has determined the minimum temperature. This is achieved when the particles of an object come completely to rest. Consequently, they arranged the temperature 0 to this state. The unit (K), named according Lord Kelvin's absolute temperature scale, is the SI-unit of temperature since 1968.
The Kelvin-scale uses the same scale as the Celsius-scale, so the conversion very simple:
[K] = [°C] + 273,15
[°C] = [K] - 273,15
William Thomson was born on the 28th July 1824 in the Irish city of Belfast as the son of a mathematics teacher. At the age of ten, he enters the university of Glasgow, six years later he went to Cambridge. There he published his first publication in 1842, showing the connections between thermal theory and electricity. More than 650 should follow.
Lord Kelvin belongs to the founders of the classic thermodynamics, but he was also in other areas very successfull. He discovered the Thomson's rule, an equation for calculating the resonant frequency of a resonant circuit. Through his researches he registered over 70 patents.
Lord Kelvin died on the 17th of December 1907 in the near from Largs in Scotland.