Convert Fahrenheit to Rankine

The Fahrenheit scale was developed by the German physicist Daniel Gabriel Fahrenheit in the early 18th century, specifically in 1724. Fahrenheit chose 32°F as the freezing point of water and 212°F as the boiling point of water under normal atmospheric pressure. The scale was based on several reference points, including the freezing point of water, the temperature of a mixture of ice and salt (which he set to 0°F), and the human body temperature, which he initially set at 96°F (later adjusted to 98.6°F). The Fahrenheit scale was widely used in English-speaking countries, particularly the U.S., until the adoption of the Celsius and Kelvin scales in scientific communities. It remains in common use for everyday temperature measurements in the U.S. and some Caribbean nations.

The Rankine scale was developed by the Scottish engineer and physicist William John Macquorn Rankine in the 19th century, specifically in 1859. Rankine created this scale to provide an absolute temperature scale using Fahrenheit's temperature divisions, making it particularly useful for thermodynamic calculations in engineering and physics. The Rankine scale is still used in some fields, particularly in the United States for thermodynamic calculations in engineering applications, though the Kelvin scale is more widely used internationally in scientific contexts.