What is Daniel Gabriel Fahrenheit?
[[File:Fahrenheit small.jpg|thumb|''Daniel Gabriel Fahrenheit'']] [[File:Daniel Gabriel Fahrenheit, place of burial.jpg|thumb|Commemorative plaque in [[Den Haag]], where he is buried]] '''Daniel Gabriel Fahrenheit''' (1686-1736) was a [[Germany|German]] [[physicist]] who worked in the [[Netherlands]]. He became known for the precise [[instrument]]s he made. The [[Fahrenheit|degree Fahrenheit]] is named after him. He was the first to be able to determine the [[temperature]] with precision. His thermometers used [[Ethanol|Ethyl alcohol]] at first. When he read an article by [[Guillaume Amontons]] about using mercury in [[barometer]]s, he got the idea of using that substance for his thermometers. He calibrated his mercury thermometers to a cold temperature he could produce easily, the freezing point of salt water.<ref>[http://web.lemoyne.edu/~giunta/fahrenheit.html English translation of the originally Latin text written by Fahrenheit]</ref> In 1724 he discovered that [[water]] can be supercooled below its [[freezing point]] without turning into [[ice]]. Fahrenheit also developed a [[hydrometer]], a [[pycnometer]] and a [[hypsobarometer]] == References == {{reflist}} {{DEFAULTSORT:Fahrenheit, Daniel Gabriel}} [[Category:German physicists]] [[Category:1686 births]] [[Category:1736 deaths]]