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Results tagged with entropy
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user 198204
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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What is the entropy of a glass of water?
The entropy of water at 300K is 3254.8 J/kg.K (the value is for a saturated liquid but it is a reasonable estimate for our purpose since the entropy is a strong function of temperature!) … So, for a glass containing 100 ml of water, entropy is about 325.48 J/K (assuming density of water is 1g/ml) …
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Exergy, entropy and energy quality
Exergy depends on entropy. So by defining energy quality as Exergy/Energy, one may argue that energy quality depends on entropy. …
- 355
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Is time travel a violation of second law of thermodynamics?
According to the increase of entropy principle, the entropy of the universe is always increasing. So, does going back in time violates the second law of thermodynamics? … Because entropy of the universe will have to decrease in that case.
Does that make time travel theoretically impossible? …
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