Units of measurement
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Rankine
Kelvin
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Rankine
Rankine is a temperature scale similar to Kelvin but using Fahrenheit degrees instead of Celsius. Zero Rankine (0 °R) corresponds to absolute zero. It is used in some engineering calculations in the US.
Kelvin
Kelvin is an absolute temperature scale where zero Kelvin (0 K) is absolute zero, the temperature at which particles stop moving. One Kelvin has the same size as one degree Celsius. The scale is used in scientific research.