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www.merriam-webster.com/dictionary/entropy

Entropy definition is - a measure of the unavailable energy in a closed thermodynamic system that is also usually considered to be a measure of the system's disorder, that is a property of the system's state, and that varies directly with any reversible change in heat in the system and inversely with the temperature of the system; broadly : the degree of disorder or uncertainty in a system...

www.quora.com/How-would-you-explain-thermodynamic-entropy...

"Entropy is disorder": entropy is statistical in nature, and you can't think of it as disorder unless you define the terms order and disorder. "Entropy, S, is the heat content, Q, divided by the body's temperature, T ":in classical thermodynamics the change in entropy of a system from one state to another: ΔS = ∫dQ/T over a reversible path ...

www.thoughtco.com/definition-of-entropy-604458

This is the definition of entropy as the term applies to chemistry, physics, and other sciences. An example of entropy in a system is given.

Entropy is an essential concept used in a field of science called thermodynamics. In this lesson, we'll learn more about thermodynamics, entropy, and the uses of this concept.

encyclopedia.kids.net.au/page/en/Entropy

Entropy has distinct meanings in thermodynamics and information theory.This article discusses the thermodynamic entropy; there is a separate article on information entropy.In fact, the two types of entropy are closely related, and their relationship reveals deep connections between thermodynamics and information theory.

www.britannica.com/science/entropy-physics

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. The concept of entropy provides deep insight into the direction of spontaneous change for many everyday phenomena.

wiki.kidzsearch.com/wiki/Entropy

Entropy is a law of nature in which everything slowly goes into disorder. The entropy of an object is a measure of the amount of information it takes to know the complete state of that object, atom by atom. The entropy is also a measure of the number of possible arrangements the atoms in a system can have.

www.science20.com/hammock_physicist/what_entropy-89730

The honor of introducing the concept "entropy" goes to German physicist Rudolf Clausius. He coined the term "entropy", and provided a clear quantitative definition. According to Clausius, the entropy change ΔS of a thermodynamic system absorbing a quantity of heat ΔQ at absolute temperature T is simply the ratio between the two: ΔS = ΔQ/T

en.wikipedia.org/wiki/Entropy

In information theory, entropy is the measure of the amount of information that is missing before reception and is sometimes referred to as Shannon entropy. Shannon entropy is a broad and general concept which finds applications in information theory as well as thermodynamics.

study.com/.../what-is-entropy-definition-law-formula.html

In this lesson, you will learn the definition of entropy and discover how it can be applied to everyday situations. You will explore the second law of thermodynamics which is where entropy is ...

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