An example of a dependent variable in relation to an independent variable, as used in thermodynamics. |

**variable**is a quantity that that varies or changes with time or circumstances, which can be divided into two classifications: extensive (or path independent) and intensive (or path dependent), as well as be a

__dependent variable__or an independent variable.

Extensive variables

The following are extensive variables: [1]

Lengthl

SurfaceA

VolumeV

Entropy S

Internal energyU

EnthalpyH

Free energy,ForG

Momentum

Kinetic energy

Electricity amount of (of substance)

(add)

Intensive variables

The following are intensive variables: [1]

TemperatureT

PressureP

Magnetic fieldB

Chemical potentialμ

Density

Velocity

(add)

See also

● State variable

● Conjugate variables

● Human thermodynamics variable table

References

1. (a) Landau, David P. and Binder, Kurt. (2005).

*A Guide to Monte Carlo Simulations in Statistical Physics*(pg. 174). Cambridge University Press.

(b) Le Bellac, Michel, Mortessagne, Fabrice, and Batrouni, Ghassan G. (2004).

*Equilibrium and Non-equilibrium Statistical Thermodynamics*(pg. 12). Cambridge University Press.

(c) Potter, Merle C. and Somerton, Craig W. (2009).

*Schaum's Outlines: Thermodynamics for Engineers*(pg. 3)

*.*McGraw-Hill.

Further reading

● Gill, Adrian. (1982).

*Atmospheric-Ocean Dynamics*(3.2: Thermodynamics variables, pg. 41-). Academic Press.

External links

● Variables (mathematics) – Wikipedia.

● Dependent and independent variables – Wikipedia.