An historical account of the development of thermodynamics is given in the article Heat.
As soon as this reversibility is introduced, general laws related to thermodynamics are applicable (see Chemical Action; Energetics).
In addition to his work on quantum theory, other areas of study included thermodynamics.
For greater simplicity and generality it is desirable to define the total heat of a substance as the function (E+pv), where E is the intrinsic energy and v the volume of unit mass (see Thermodynamics).
I have been developing new methods for studying the thermodynamics of systems with long-range interaction.