Definition - What does Fahrenheit Scale mean?
A Fahrenheit Scale is a temperature scale which is used to determine the temperature difference between any two reference temperatures, i.e., boiling points and the melting points, which are divided equally into 180 intervals called degrees. The scale is commonly defined by the two fixed points – the temperature at which water boils is 212 degrees and the temperature at which water freezes to form ice is 32 degrees. The freezing and boiling point of the water is kept apart exactly by 180 degrees; hence, the degree on the scale is 1/180 of interval between the boiling and freezing points.
Petropedia explains Fahrenheit Scale
Fahrenheit developed the first thermometer in 1713, the mercury thermometer, which has more refined measurements than the previous temperature gauges. Celsius has replaced Fahrenheit for most of the applications in most of the countries. The Celsius scale was introduced in late 1960's and 1970's by the governments of most of the countries as a part of a move to regularize a standard metric measurement for temperature.
At present, the Fahrenheit Scale is used in the U.S., Palau, Cayman Islands, Belize and Bahamas. U.S. meteorologists still use the Fahrenheit Scale for reporting and weather forecasting. Whereas the other branches of science use the Celsius scale.