I mean thermodynamic equilibrium implies mechanical equilibrium, but mechanical equilibrium doesn't mean to that the system to be in static equilibrium. For some reason, all the systems I have seen in thermodynamic equilibrium are at rest. Am I wrong with this thought?
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4Does this answer your question? Are thermodynamic quantities based on frame of reference (Specifically, the quote in the first answer.) – Chemomechanics Jun 17 '23 at 17:13
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@Chemomechanics, yes that really helped me a lot. – Julio César Jun 17 '23 at 17:19
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There are no completely closed systems. Matter exists through exchanges of energy. Isolated matter means it never exchanges energy with its surroundings. That's hard to imagine with photons everywhere. – Bill Alsept Jun 17 '23 at 17:29
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Thermodynamic equilibrium requires no net flow of energy, no net bulk flow mass and no net molecular flow between any two points within a system. Uniform motion with respect to an inertial system of reference does not change these facts. Non-uniform motion, centrifuging for example, is a different story.
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