degrees fahrenheit (ºF)
The degree fahrenheit is the unit of temperature,proposed by Gabriel Fahrenheit in 1724, whose fixed scale, the zero and one hundred in freezing temperatures and evaporation of ammonium chloride in water. On the Fahrenheit scale, the freezing point of water is 32 degrees, and boiling is 212 degrees. This scale is currently used in some anglo-saxon countries, especially the united States.