Molecules in
motion. A form of
kinetic energy. Measured in
temperature units such as
Fahrenheit,
Celsius and
Kelvin. Heat is produced by the
conversion of other forms of
energy, for example by the
oxidation process known as
burning. Heat can be transferred by
radiation.
Sadi Carnot proved that heat cannot travel from a colder to a hotter object. The study of heat is part of the field of thermodynamics.