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Results tagged with entropy
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user 78368
An important extensive property of all systems in thermodynamics, statistical mechanics, and information theory, quantifying their disorder (randomness), i.e., our lack of information about them. It characterizes the degree to which the energy of the system is *not* available to do useful work.
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Reversible vs Quasistatic
Firstly, irreversibility is equivalent to increasing entropy, reversibility is equivalent to constant entropy. Eg an idealised pendulum is a reversible system. … This increases entropy. The equilibrium here is thermal alone: the pressure is only equalised at the end. …
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