A state function is a thermodynamic variable which depends only on the current state of the system, not the path taken to reach that state.

Then, the conjugate thermodynamic variables are derivatives of the internal energy.

In the table below are given the mean square fluctuations of the thermodynamic variables and in any small part of a body.

You could say, it's like a thermodynamic variable that arises from the combined activity of a huge number of small, separate units.

It allows you to derive all the 'thermodynamic' general variables of the older and obsolete models.

These rules can be used in the creation of an accurate phase diagram where both axes are intensive thermodynamic variables.

The macrostate of the system is a description of its thermodynamic variables.

Examples of extensive thermodynamic variables are total mass and total volume.

It seems more convenient experimentally to consider mixtures with four components for which one thermodynamic variable (usually the pressure or the volume) is kept fixed.

If fluctuations bring the thermodynamic variables back to the starting condition, the structure is likely to go back to its initial configuration.