Those that can are referred to as exact differentials.
2.
The symbol for exact differentials is the lowercase letter.
3.
Suppose that the state space is two dimensional and any of the five quantities are exact differentials.
4.
This is especially useful in thermodynamics where temperature becomes the integrating factor that makes entropy an exact differential.
5.
Then, for the fictive case of a reversible process, can be written in terms of exact differentials.
6.
The differential, or infinitesimal increment, for the internal energy in an infinitesimal process is an exact differential.
7.
The quantity dY is an exact differential, while \ delta X is not, it is an inexact differential.
8.
By way of notation, we will specify the use of " d " to denote an exact differential.
9.
For an idealized continuous or quasi-static process, this means that infinitesimal incremental changes in such variables are exact differentials.
10.
The equations are named after the American physicist Percy Williams Bridgman . ( See also the exact differential article for general differential relationships ).
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