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Entropy

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Entropy

Not who you're looking for? Others named Entropy: physical property of the state of a system, measure of disor · only quantity in the physical sciences that requires a parti · property of thermodynamical systems · the adiabatic constant

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Entropy across IJR

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Overview

In thermodynamics, the interpretation of entropy as a measure of energy dispersal has been exercised against the background of the traditional view, introduced by Ludwig Boltzmann, of entropy as a quantitative measure of disorder. The energy dispersal approach avoids the ambiguous term 'disorder'. An early advocate of the energy dispersal conception was Edward A. Guggenheim in 1949, using the word 'spread'. In this alternative approach, entropy is a measure of energy dispersal or spread at a specific temperature. Changes in entropy can be quantitatively related to the distribution or the spreading out of the energy of a thermodynamic system, divided by its temperature. Some educators propose that the energy dispersal idea is easier to understand than the traditional approach. The concept has been used to facilitate teaching entropy to students beginning university chemistry and biology. Comparisons with traditional approach The term "entropy" has been in use from early in the history of classical thermodynamics, and with the development of statistical thermodynamics and quantum theory, entropy changes have been described in terms of the mixing or "spreading" of the total energy of each constituent of a system over its particular quantized energy levels.

From Wikipedia (CC BY-SA 4.0).

Notable quotes

“If I took a heavy weight on the floor here and pushed it, it would slide and stop. ... So, a frictional effect seems to be irreversible. ... a frictional effect ... is the result of enormous complexity of the interaction of the block with the wood ... the jiggling of the atoms inside the wood of the block is changed into disorganized irregular wiggle-waggles of the atoms in the wood.”
— Richard Feynman, (quote at 6:47 of 21:31 in video)
“There is nothing supernatural about the process of to states of higher entropy; it is a general property of systems, regardless of their materials and origin. It does not violate the Second Law of thermodynamics since the decrease in entropy within an open system is always offset by the increase of entropy in its surroundings.”
— Ervin László, Introduction to Systems Philosophy: Toward a New Paradigm of Contemporary Thought (1972) p. 44.
“In an isolated system, which cannot exchange energy and matter with the surroundings, this tendency is expressed in terms of a function of the macroscopic state of the system: the entropy.”
— Ilya Prigogine, Gregoire Nicolis & Agnes Babloyants, "Thermodynamics of Evolution" Part II, Physics Today (1972) Vol. 25, December. p. 38-44.
“Entropy... was discovered and exalted because it was essential to practical applications of physics... But by it science has been saved from a fatal narrowness. ...[T]here would have been nothing to represent "becoming" in the physical world.”
— p. 104.
“[T]he device by which an organism maintains itself stationary at a fairly high level of orderliness (...low level of entropy) ...consists in continually sucking orderliness from its environment.”
— p. 74.
“Clausius proposed... The entropy of an isolated system increases in any spontaneous change.”
— Note: this quote combines Atkins' footnote 7.

Quotes via Wikiquote (CC BY-SA), each with its original source.

Notable quotes

“If I took a heavy weight on the floor here and pushed it, it would slide and stop. ... So, a frictional effect seems to be irreversible. ... a frictional effect ... is the result of enormous complexity of the interaction of the block with the wood ... the jiggling of the atoms inside the wood of the block is changed into disorganized irregular wiggle-waggles of the atoms in the wood.”
— Richard Feynman, (quote at 6:47 of 21:31 in video)
“There is nothing supernatural about the process of to states of higher entropy; it is a general property of systems, regardless of their materials and origin. It does not violate the Second Law of thermodynamics since the decrease in entropy within an open system is always offset by the increase of entropy in its surroundings.”
— Ervin László, Introduction to Systems Philosophy: Toward a New Paradigm of Contemporary Thought (1972) p. 44.
“In an isolated system, which cannot exchange energy and matter with the surroundings, this tendency is expressed in terms of a function of the macroscopic state of the system: the entropy.”
— Ilya Prigogine, Gregoire Nicolis & Agnes Babloyants, "Thermodynamics of Evolution" Part II, Physics Today (1972) Vol. 25, December. p. 38-44.
“Entropy... was discovered and exalted because it was essential to practical applications of physics... But by it science has been saved from a fatal narrowness. ...[T]here would have been nothing to represent "becoming" in the physical world.”
— p. 104.
“[T]he device by which an organism maintains itself stationary at a fairly high level of orderliness (...low level of entropy) ...consists in continually sucking orderliness from its environment.”
— p. 74.
“Clausius proposed... The entropy of an isolated system increases in any spontaneous change.”
— Note: this quote combines Atkins' footnote 7.

Quotes via Wikiquote (CC BY-SA), each with its original source.

Not who you're looking for? Others named Entropy: physical property of the state of a system, measure of disor · only quantity in the physical sciences that requires a parti · property of thermodynamical systems · the adiabatic constant

Overview

In thermodynamics, the interpretation of entropy as a measure of energy dispersal has been exercised against the background of the traditional view, introduced by Ludwig Boltzmann, of entropy as a quantitative measure of disorder. The energy dispersal approach avoids the ambiguous term 'disorder'. An early advocate of the energy dispersal conception was Edward A. Guggenheim in 1949, using the word 'spread'. In this alternative approach, entropy is a measure of energy dispersal or spread at a specific temperature. Changes in entropy can be quantitatively related to the distribution or the spreading out of the energy of a thermodynamic system, divided by its temperature. Some educators propose that the energy dispersal idea is easier to understand than the traditional approach. The concept has been used to facilitate teaching entropy to students beginning university chemistry and biology. Comparisons with traditional approach The term "entropy" has been in use from early in the history of classical thermodynamics, and with the development of statistical thermodynamics and quantum theory, entropy changes have been described in terms of the mixing or "spreading" of the total energy of each constituent of a system over its particular quantized energy levels.

From Wikipedia (CC BY-SA 4.0).

In thermodynamics, the interpretation of entropy as a measure of energy dispersal has been exercised against the background of the traditional view, introduced by Ludwig Boltzmann, of entropy as a quantitative measure of disorder. The energy dispersal approach avoids the ambiguous term 'disorder'. An early advocate of the energy dispersal conception was Edward A. Guggenheim in 1949, using the word 'spread'.

Entropy across IJR

Ask Genius by OpenServe about Entropy Create in Studio Build a game Watch videos