degree Rankine [R] to degree Fahrenheit [F] Converter

Definition: Degree Rankine (°R or °Ra) is a thermodynamic (absolute) temperature scale, named after the Scottish physicist and engineer William John Macquorn Rankine, who proposed it in 1859. It uses the Fahrenheit degree as its interval and starts from absolute zero.

History/origin: William John Macquorn Rankine developed the Rankine scale as an absolute temperature scale to complement the Fahrenheit scale, similar to how the Kelvin scale relates to the Celsius scale.

Current use: The Rankine scale is primarily used in engineering contexts, particularly in thermodynamics and combustion calculations, predominantly in the United States. It's not as widely used as Kelvin or Celsius.

Definition: Degree Fahrenheit (°F) is a unit of temperature on the Fahrenheit scale, where the freezing point of water is 32 °F and the boiling point is 212 °F at standard atmospheric pressure.

History/origin: The Fahrenheit scale was developed in 1724 by the German physicist Daniel Gabriel Fahrenheit. He based his scale on the freezing point of a brine solution (0 °F) and the approximate body temperature of a human (96 °F, later adjusted to 98.6 °F).

Current use: Degree Fahrenheit is primarily used in the United States, its associated territories, and a few other countries for weather reporting and everyday temperature measurements.