A French scientist - René-Antoine Ferchault de Réaumur
(1683 - 1757) - invented the liquid thermometer.
The definition for Réaumur:
0 degrees Réaumur is the freezing
point of water
80 degrees Réaumur is the boiling
point of water
The definition is nearly the same as the definition of
Celsius, but because of the decimal system, it is the Celsius
definition for temperature, which is in use nearly all over
the world.
