Microscopic reversibility

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Microscopic reversibility

Dbpedia

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The principle of microscopic reversibility in physics and chemistry is twofold:First, it states that the microscopic detailed dynamics of particles and fields is time-reversible because the microscopic equations of motion are symmetric with respect to inversion in time (T-symmetry);Second, it relates to the statistical description of the kinetics of macroscopic or mesoscopic systems as an ensemble of elementary processes: collisions, elementary transitions or reactions. For these processes, the consequence of the microscopic T-symmetry is: Corresponding to every individual process there is a reverse process, and in a state of equilibrium the average rate of every process is equal to the average rate of its reverse process.

English Wikipedia http://en.wikipedia.org/wiki/Microscopic_reversibility