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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.
8
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3
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Does entropy have a physical meaning?
Entropy is incredibly useful as a mathematical tool. But what does it actually mean? … For example,
1) Entropy is a measure of disorder.
2) Entropy is a measure of heat flow.
3) Entropy is a measure of energy. …
2
votes
Why do we remember the past but not the future?
If you think of the future as a probabilistic distribution of events, for the far future there are an infinite number of possible events. As you approach those events in time, past (and present) actio …