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- Dictionaryentropy/ˈɛntrəpi/
noun
- 1. a thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system: "the second law of thermodynamics says that entropy always increases with time"
- 2. lack of order or predictability; gradual decline into disorder: "a marketplace where entropy reigns supreme"
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Nov 28, 2021 · Entropy is defined as a measure of a system’s disorder or the energy unavailable to do work. Entropy is a key concept in physics and chemistry, with application in other disciplines, including cosmology, biology, and economics. In physics, it is part of thermodynamics. In chemistry, it is part of physical chemistry.
Jun 8, 2011 · The meaning of ENTROPY 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 ...
In short, the thermodynamic definition of entropy provides the experimental verification of entropy, while the statistical definition of entropy extends the concept, providing an explanation and a deeper understanding of its nature.
May 29, 2024 · 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, entropy is also a measure of the molecular disorder, or randomness, of a system.
ENTROPY definition: 1. the amount of order or lack of order in a system 2. a measurement of the energy in a system or…. Learn more.
Sep 29, 2022 · Entropy Definition . Entropy is the measure of the disorder of a system. It is an extensive property of a thermodynamic system, which means its value changes depending on the amount of matter that is present. In equations, entropy is usually denoted by the letter S and has units of joules per kelvin (J⋅K −1) or kg⋅m 2 ⋅s −2 ⋅K −1.
Entropy definition: (on a macroscopic scale) a function of thermodynamic variables, as temperature, pressure, or composition, and differing from energy in that energy is the ability to do work and entropy is a measure of how much energy is not available.
The second law of thermodynamics is best expressed in terms of a change in the thermodynamic variable known as entropy, which is represented by the symbol S. Entropy, like internal energy, is a state function.
entropy. noun [ U ] specialized us / ˈen.trə.pi / uk / ˈen.trə.pi / Add to word list. social science. the amount of order or lack of order in a system. physics. a measurement of the energy in a system or process that is not available to do work. SMART Vocabulary: related words and phrases. Statistics. actuarial. actuary. analysis of covariance.
Entropy is not energy; entropy is how the energy in the universe is distributed. There is a constant amount of energy in the universe, but the way it is distributed is always changing.
