What is Rankine scale?
The '''Rankine scale''' is a [[Thermodynamics|thermodynamic]] (absolute) [[temperature]] scale. It is based around [[absolute zero]]. Rankine is similar to the [[Kelvin|kelvin scale]] in that it starts at [[absolute zero]] and 0 °Ra is the same as 0 K but is different as a change of 1 °Ra is the same as a change of 1 °F ([[Fahrenheit]]) and not 1 °C ([[Celsius]]). Note that the abbreviation °R is [[ambiguous]], as it can also refer to the [[Réaumur scale]]. The Kelvin and Rankine temperature scales are defined so that absolute zero is 0 kelvins (K) or 0 degrees Rankine (°R). The Celsius and Fahrenheit scales are defined so that absolute zero is −273.15&nbsp;°C or −459.67&nbsp;°F. Sometimes the unit is referred to without the degree symbol, similar to the kelvin. The Rankine scale was originally used in the United States and France. {{science-stub}} [[Category:Units of temperature]]