is a measure of hotness or coldness of a physical object with reference
to some standard value. Similar to pressure or density, it is an intensive
property. Meaning that it does not change as the amount of matter changes.
originally based its 0° value as the freezing temperature of a solution made
from a mixture of water, ice, and ammonium chloride. But today, it's defined by
two fixed points, the freezing point
and the boiling point
is a temperature scale for which the freezing and boiling points of water
are defined as
degrees respectively. The Réaumur scale was used widely in Europe,
particularly in France, Germany and Russia.