熵
entropy; measure of disorder
Meanings
2 senses · 6 examplesnoun
entropy; the measure of unavailable thermal energy in a thermodynamic system, expressed as the quotient of the change in heat energy divided by temperature
technicalFundamental concept in thermodynamics and statistical mechanics representing the unavailability of a system's thermal energy for conversion into mechanical work.
According to the second law of thermodynamics, the entropy of an isolated system never decreases.
Calculating the change in entropy can help us understand the irreversibility of processes.
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In this adiabatic expansion process, the entropy of the system remains constant.
noun
(science and technology) a measure of the state of a material system; the degree of probability of a certain state occurring
technicalExtended usage in information theory, statistics, and complex systems theory to describe disorder, uncertainty, or the amount of information in a system.
In information theory, Shannon used entropy to measure the uncertainty of information.
The higher the degree of disorder in a system, the greater its entropy value.
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This can be explained using the principle of maximum entropy.