An interval of one Celsius degree corresponds to an interval of 1.8 Fahrenheit degrees on the Fahrenheit temperature scale. One Celsius degree is an interval of 1 K, and zero Celsius degree is 273.15 K. The Kelvin is defined as the fraction 1/273.16 of the thermodynamic temperature of the triple point of water (exactly 0.01 ☌ or 32.018 ☏), so the triple point of water is exactly 273.16 K. ![]() ![]() The Kelvin scale is an absolute temperature scale using as its initial point the absolute zero which is the temperature at which all thermal molecular motion ceases in the classical description of thermodynamics. In the Celsius scale water freezes at close to 0 degrees Celsius (☌) and boils at close to 100 ☌. eFunda - Online Reference for Engineers eFunda provides extensive Unit Conversion, Equations. The other one is called the Celsius scale which is also defined by the freezing and boiling points of water. On this scale the freezing point of water is 32 degrees Fahrenheit (☏) and the boiling point is 212 ☏. The first was proposed in 1724 and is still used as the official scale in the USA. ![]() The two most widely used units of temperature measurement are Fahrenheit and Celsius.
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