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Gabriel D. Fahrenheit
Born 14 May 1686

image: GabrielWho was Gabriel Fahrenheit?

Fahrenheit was a German physicist born in Danzig, Poland.

What is Gabriel Fahrenheit famous for?

In 1724, he devised the Fahrenheit scale of temperature recording. The freezing point of water on this scale is 32 degrees and the boiling point of water is 212 degrees.

What other measures of temperature are there?

Temperature is measured by a thermometer and can be measured using the scales Fahrenheit, Celsius and another scale called Kelvin. Fahrenheit is used mostly in the United States, and most of the rest of the world uses Celsius. Kelvin is used by scientists.

The word thermometer is made up of two smaller words:

"Thermo" means heat and "meter" means to measure.

Who 'invented' the Celsius scale?

The Celsius scale, developed in 1742, is named after Anders Celsius. He started with the freezing point of water and said that was 0 degrees Celsius (C for short). At the point where water boils, he marked that at 100 degrees C. The Celsius scale used to be called the "centigrade" scale. Centigrade means "divided into 100 degrees."

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Fahrenheit Celsius Kelvin
Water boils 212°F 100°C 373.16°K
Water freezes 32°F 0°C 273.16°K
Absolute zero -459.7°F -273.16°C 0°K

Who 'invented' the Kelvin scale?

The Kelvin scale is named after Lord Kelvin, whose full name is Sir William Thomson, Baron Kelvin of Largs, Lord Kelvin of Scotland. His scale starts at 0 degrees Kelvin, which is called absolute temperature. Water freezes at 273.16K and boils at 373.16K.

 

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