Ep 122: ”Work and Heat” - Chiara Marletto’s ”The Science of Can and Can’t” Chapter 6 Readings & Discussion.
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The Counter Factor of Irreversibility Is Exact
Even under perfectly reversible microscopic laws, it is possible to have some device that can perform a transformation in one direction by certain means. This kind of counter factual irreversibility is compatible with time reversal symmetric laws without requiring any approximation. Crucially, reversing the laws of motion of the elementary constituents will not turn the forward device performing a transformation from a to b into a reverse device.
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