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- entropy, the measure of a system’s thermal energy per unit temperature that is unavailable for doing useful work. Because work is obtained from ordered molecular motion, the amount of entropy is also a measure of the molecular disorder, or randomness, of a system.
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4 days ago · entropy, the measure of a system’s thermal energy per unit temperature that is unavailable for doing useful work. Because work is obtained from ordered molecular motion, the amount of entropy is also a measure of the molecular disorder, or randomness, of a system.
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5 days ago · The entropy of an isolated system approaches a constant value as the temperature of the system approaches absolute zero (−273.15 °C, or −459.67 °F). In practical terms, this theorem implies the impossibility of attaining absolute zero, since as a system approaches absolute zero, the further extraction of energy from that system becomes ...
4 days ago · In information theory, the entropy of a random variable quantifies the average level of uncertainty or information associated with the variable's potential states or possible outcomes. This measures the expected amount of information needed to describe the state of the variable, considering the distribution of probabilities across all potential ...
5 days ago · Evolution depends on entropy in two ways. One, you need mutations in the DNA. DNA is replicated from one generation to the other, but there are always mutations. Mutations are noise, which is just another word for entropy. Here, in fact, is another definition of entropy in terms of information theory. Noise is then a manifestation of entropy.
2 days ago · Entropy is a cornerstone concept in physics, deeply intertwined with the principles of thermodynamics, statistical mechanics, and quantum information theory. Broadly speaking, entropy measures the degree of disorder within a system: highly ordered systems exhibit low entropy, while highly disordered systems have high entropy.
4 days ago · An introduction to the concept of entropy, which is a measure of the tendency of energy to disperse. Duration: 5:51. [C0905a2]
5 days ago · The word was entropy, from the Greek (of course) meaning transformation, and used it to link the ideas above to disorder, the loss of structure, the gradual deficiency of energy as it gets used, via friction, heat loss or emissions and other waste products. And the equations were simple: dS >= 0
