Rankine temperature scale

It has an absolute zero degree, below which there is no temperature, the Rankine temperature scale using the same dimensions as used on the Fahrenheit scale. Absolute zero degrees or 0 ° Ra is the temperature at which the molecular energy is minimal, which corresponds to a temperature of -459.67 ° C. Since Rankin Degree is the same as Fahrenheit, the freezing point of water (32 ° C.) and the boiling point of water (212 ° C.) correspond to 491.67 ° Ra and 671.67 ° Ra, respectively. Temperature scale was named after Scottish engineer and physicist William John Macquorn Rankine who proposed the standard in 1859. Another absolute temperature scale, Kelvin temperature scale, is commonly used for scientific measurements. See also Celsius scale

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Several engineering fields in the United States use Rankin scale to measure thermodynamic temperature. However, in the scientific community as a whole, the thermodynamic temperature is measured using the Kelvin scale. The US National Institute of Standards and Technology does not recommend using Rankine's degree for NIST publications.

The Rankine scale (/ ræŋkɪn /) is the absolute scale of the thermodynamic temperature named after the engineer and physicist William John Macquorn Rankine at the University of Glasgow that he proposed in 1859. (Kelvin scale was first proposed in 1848.) It can be used in engineering systems with Fahrenheit for thermal calculations. The sign of Rankin is ° R (Ra can be distinguished from Rømer scale and Réaumur scale as needed). With a similar Kelvin, some authors omit the degree sign and refer to the unit as a term. Zero of the Kelvin scale and the Rankin scale are all absolute zero, but the temperature difference of Rankin degrees is defined as equal to 1 degree Fahrenheit rather than the Celsius temperature used in the Kelvin scale. Therefore, the temperature 0 K (-273.15 ° C; -459.67 ° F) is equal to 0 ° R and the temperature -458.67 ° F is equal to 1 ° R

The sign of Rankin is ° R (Ra can be distinguished from Rømer scale and Réaumur scale as needed). Both the Kelvin scale and the Rankine scale are zero, but the Rankin degree is defined to be equal to 1 degree Fahrenheit, not just once used in the Kelvin scale. The temperature of -459.67 ° F is exactly equal to 0 ° R. Several engineering fields in the United States use Rankin scale to measure thermodynamic temperature. However, in the scientific community as a whole, the thermodynamic temperature is measured using the Kelvin scale. The US National Institute of Standards and Technology does not recommend using Rankine's degree for NIST publications.