Thermodynamic Humor

Zeroth Law: Thermodynamic Equilibrium

A system in thermodynamic equilibrium is by definition its most probable

state; all processes have essentially gone to completion and its macroscopic

variables are unchanging. Also, if two systems are in thermodynamic

equilibrium with a third they are in thermodynamic equilibrium with each other.

First Law: Conservation of Energy

The increase in energy of a closed system is equal to the energy added in the

form of heat minus the work done by the system on its surroundings:

ΔU = ΔQ - ΔW

Second Law: Entropy Always Increases

The entropy of an isolated system will only increase with time. Generally

ΔS ≥ 0

The entropy will approach a maximum value as the system evolves in time.

Third Law: Absolute Zero

As a system’s temperature approaches absolute zero all processes cease, and

the system entropy approaches its minimum value.

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Zeroth Law

“You must play the game.”

First Law

“You can’t win the game.”

Second Law

“You can’t even lie the game.”

Third Law

“You can’t get out of the game.”

... attributed to C. P. Snow