Rømer is a disused temperature scale named after the Danish astronomer Ole Christensen Rømer, who proposed it in 1701. Temperature is the physical property of a system which underlies the common notions of hot and cold; the material with the higher temperature is said to be hotter. ... Wikipedia does not yet have an article with this exact name. ... Ole Rømer. ... Events January 18 - Frederick I becomes King of Prussia. ...

In this scale, the zero was initially set using freezing brine. The boiling point of water was defined as 60 degrees. Rømer then saw that the freezing point of water fell at roughly one eighth of that value (7.5 degrees), so he used that value as the other fixed point. Thus the unit of this scale, a degree Rømer, is 40/21sts of a kelvin (or of a degree Celsius). The symbol is sometimes given as °R, but since that is also sometimes used for the Rankine scale, the other symbol °Rø is to be preferred. The name should not be confused with Réaumur. Brine is water saturated or nearly saturated with salt. ... Drinking water This article focuses on water as we experience it every day. ... The word unit means any of several things: One, the first natural number. ... The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units. ... The degree Celsius (°C) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701–1744), who first proposed a similar system in 1742. ... Rankine is a now rarely used temperature scale named after the Scottish engineer and physicist William John Macquorn Rankine, who proposed it in 1859. ... The degree Réaumur is a unit of temperature named after René Antoine Ferchault de Réaumur, who first proposed it in 1731. ...

Daniel Gabriel Fahrenheit learned of Rømer's work and visited him in 1708; he improved on the scale, increasing the number of divisions by a factor of four and eventually establishing what is now known as the Fahrenheit scale, in 1724. Daniel Gabriel Fahrenheit, also called Gabriel Daniel Fahrenheit (May 24, 1686 - September 16, 1736), was a physicist and an engineer, who most of his life worked in Netherlands and for whom the Fahrenheit scale of temperature is named. ... Events March 23 - James Francis Edward Stuart lands at the Firth of Forth Kandahar conquered by Mir Wais In Masuria one third of the population die during the plague September 28: Peter the Great defeats the Swedes at the Battle of Lesnaya J.S. Bach appointed as chamber musician and... This article is about the temperature scale; see also Fahrenheit graphics API. Fahrenheit is a temperature scale named after the German physicist Gabriel Fahrenheit (1686–1736), who proposed it in 1724. ... Events January 14 - King Philip V of Spain abdicates the throne February 20 - The premiere of Italian opera by George Frideric Handel, takes place in London June 23 - Treaty of Constantinople signed. ...

External link

• A Brief History of Temperature Measurement (http://home.comcast.net/~igpl/Temperature.html)