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:also known as ''Nernst's Law'', states that it is not possible to bring any system to the [[absolute zero]] of temperature in a finite number of operations.

:also known as ''Nernst's Law'', states that it is not possible to bring any system to the [[absolute zero]] of temperature in a finite number of operations.

These laws tell us to what constraints ''any'' system is subject. The particular properties of a specific system cannot be calculated from these laws alone. More information is required: material constants, such as [[specific heat]] or [[isothermal compressibility]], tell us how a particular system will behave under thermodynamic processes.

These laws tell us to what constraints ''any'' system is subject. For example, it allows us to calculate the maximum possible efficiency of an [[engine]] once we know the temperature at which it operates.

 

The particular properties of a specific system cannot be calculated from these laws alone. More information is required: so-called ''thermodynamic equations of state'' tell us how a particular system will behave under thermodynamic processes. A simple example of such an equation is the [[Ideal Gas Law]] that applies to dilute gases.

== References ==

== References ==

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