For instance, it was only in 1973 that Lanford proved that Boltzmann’s equations actually held in a simple case for a certain time. Well, inaccessible so far…įinally, note that mathematically speaking, not much is fully understood regarding entropy of gases. And it’s quite a remarkable fact that the answer lies in the inaccessible secrets of the Big Bang. How can irreversibility emerge from reversibility? How can macroscopic information always go into microscopic information? It’s a shame that the increase of entropy is hardly ever connected to these questions, which, from a fundamental perspective, are particularly breathtaking. What I like about the second law of thermodynamics is that it really is a mathematical riddle. Here’s a great presentation by Sean Carroll: I think we’ve come to the point where I feel more comfortable letting an expert talk.
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