Thermometer scale for fever
Rankine scale!
8 scales of temperature
Réaumur scale
Scale of temperature
This article is about the temperature scale. For other uses, see Réaumur (disambiguation).
Not to be confused with Rømer scale.
The Réaumur scale (French pronunciation:[ʁeomy(ː)ʁ]; °Ré, °Re, °r), also known as the "octogesimal division",[1] is a temperature scale for which the melting and boiling points of water are defined as 0 and 80 degrees respectively.
The scale is named for René Antoine Ferchault de Réaumur, who first proposed a similar scale in [2]
Change in scale
Réaumur's thermometer contained diluted alcohol (ethanol) and was constructed on the principle of using 0° for the melting temperature of water, and graduating the tube into degrees, each of which was one-thousandth of the volume contained by the bulb and tube up to the zero mark.
He suggested that the concentration of alcohol employed be such that it began boiling at 80 °Ré&#;– that is, when it had expanded in volume by 8%. He chos
