of absolute temperature
. One degree (1°) rankine represents the same temperature difference as one degree on Fahrenheit scale
, but the zero point of the scale
is set at absolute zero. Thus, the rankine temperature is 459.67° plus
the Fahrenheit temperature. One degree rankine is equal to five-ninth (0.55) of kelvin. Named after the Scottish engineer
William Rankine (1820-70) who devised a cycle
in a heat engine
(the Rankine Cycle).