Rankine scale
Temperature
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The Rankine scale is an absolute scale of thermodynamic temperature named after the University of Glasgow engineer and physicist Macquorn Rankine, who proposed it in 1859. Wikipedia
Celsius scale: (5/9 x − 273.15) °C
Fahrenheit: (x − 459.67) °F
Kelvin scale: 5/9 x K
Symbol: R, °R, °Ra
Unit of: Temperature
x R in: corresponds to