Project Watershed Central New York

Fahrenheit is a temperature scale named after the German physicist Gabriel Fahrenheit (1686–1736), who proposed it in 1724.

In this scale, the freezing point of water is 32 degrees Fahrenheit (this is written "32 °F"), and the boiling point is 212 degrees, placing the boiling and melting points of water 180 degrees apart. Thus the unit of this scale, a degree Fahrenheit, is 5/9ths of a kelvin (or of a degree Celsius), and ?40 degrees Fahrenheit is equal to ?40 degrees Celsius.