The representation of a common temperature method

Fahrenheit, was established in 1714, the German farenheit scale. It for measuring temperature material with mercury, the melting point of water is 32 degrees, the boiling point is 212 degrees, the middle is divided into 180 degrees, expressed in ℉. The Celsius scale: swedes is photographed west yunus, created in 1742. Make temperature material with mercury, the freezing point of water is 100 degrees, the boiling point of 0 degrees. After from his assistant to the freezing point of water is 0 degrees, the boiling point is 100 degrees. According to the expansion of the mercury column is divided into 100 points, each divided into 1 degree, expressed in ℃. Kelvin temperature: British physicist kelvin was established in 1948 a has nothing to do with any physical properties of thermodynamic temperature scale, also known as absolute scale, expressed as a T, temperature unit expressed in K. Absolute temperature 0 degrees, equal to c - 273. 15 ℃, which is said centigrade temperature limit. Formula is: Celsius temperature t ( c) And the absolute temperature T ( K) ：T( K) =t( c) + 273. 15 Celsius and Fahrenheit temperature t ( f) ：t( c) = ( 5/9) ( t( f) - 32]