Imagine an infinitely long square box of side L. This box is isolated from the ambient and contains a number of N molecules of an ideal gas in a volume L^3 in thermal equilibrium located at one end of the box at time t=0.(adsbygoogle = window.adsbygoogle || []).push({});

I found that the evolution of this system can be modelled by the decay equation

n(t) = N e^{-At}.

Where n is the number of particles in the volume L^3 and A is a scalling constant.

My question is: Is there a better model for this system? (maybe hopefuly including absolute temperature T, L and Boltzman constant k_B)

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# Sudden decompression

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