ABSTRACT
Equation 5.3 is called the differential form of entropy fundamental equation. It implies that the entropy S are described by the extensive set of properties (U, V, N1, …, Nn), which is also known as Postulate I or
S = S(U, V, N1, N2, …). (5.3′)
Figure 5.1 Plot of U vs. S at specified values of V.
