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Convert Table:
- 0C = (0F - 32) * 5 / 9
- K = 0C + 273.15
- Ra = (0C + 273.15) * 9 / 5
- Re = 0C * 0.8
Fahrenheit temperature scale: In this scale, the freezing point of water is 32 degrees Fahrenheit (0F) and the boiling point 212 0F (at standard atmospheric pressure), placing the boiling and freezing points of water exactly 180 degrees apart. A degree on the Fahrenheit scale is 1/180th part of the interval between the ice point and the boiling point. A temperature interval of one degree Fahrenheit is an interval of 5/9 of a degree Celsius. This temperature scale was named after the German physicist Daniel Gabriel Fahrenheit, who proposed it in 1724.
Reaumur temperature scale: A temperature scale adopted in most of Europe prior to the metric system. This scale depended on only one endpoint, the freezing point of water, which was taken as zero. The thermometer was filled to the zero mark with a solution of alcohol and water at the temperature of the freezing point of water. The proportion of alcohol to water in the solution was chosen such that if its volume at the freezing point of water was 1000, its volume at the solution's boiling point was 1080. This temperature, the boiling point of the solution, was 80 degrees on Reaumur's scale. In practice by 1770 the instrument makers were making mercury thermometers using two end points (0 as the freezing point of water and 80 degrees the boiling point of water), dividing the space between them into 80 intervals, and calling them Reaumur degrees. Thus one Réaumur degree is 1.25 times of a degree centigrade, and a temperature in degrees Reaumur is 80% of the temperature in degrees centigrade. This temperature scale was named after the French scientist Rene Antoine Ferchault de Reaumur, who proposed it in 1730,
Celsius temperature scale: Previously known as the centigrade scale in some countries. From 1744 until 1954, 0 0C on the Celsius scale was defined as the freezing point of water and 100 0C was defined as the boiling point of water under a pressure of one standard atmosphere. However, the unit "degree Celsius" and the Celsius scale are currently, by international agreement, defined by two different points: absolute zero, and the triple point of VSMOW (specially prepared water). This definition also precisely relates the Celsius scale to the Kelvin scale, which is the SI base unit of temperature (symbol: K). Absolute zero—the temperature at which no energy remains in a substance - is defined as being precisely 0 K and -273.15 0C. The triple point of water is defined as being precisely 273.16 K and 0.01 0C. This temperature scale was named after the Swedish astronomer Anders Celsius (1701-1744).
Kelvin temperature scale: A temperature scale having an absolute zero corresponds to a temperature of -273.150 on the Celsius temperature scale. The Kelvin degree is the same size as the Celsius degree. The temperature scale is named after the British mathematician and physicist William Thomson Kelvin, who proposed it in 1848.
Rankine temperature scale: A temperature scale having an absolute zero corresponds to a temperature of -459.670F. The Rankine degree is the same size as the Fahrenheit temperature scale. The temperature scale is named after the Scottish engineer and physicist William John Macquorn Rankine, who proposed it in 1859.
