### Formula

S

the entropy

U

the internal energy

A

the Helmholtz energy

T

the temperature

S

the entropy

U

the internal energy

A

the Helmholtz energy

T

the temperature

In thermodynamics, the Helmholtz free energy is a thermodynamic potential which measures the “useful” work obtainable from a closed thermodynamic system at a constant temperature and volume.

U

A

T

S

Precision

- C
- C#
- C++
- Java
- JavaScript
- LaTeX
- PHP