Maxwell's demon


Also found in: Encyclopedia, Wikipedia.
Related to Maxwell's demon: Helmholtz Resonator

Max·well's demon

 (măks′wĕlz′, -wəlz)
n.
An imaginary creature who is able to sort hot molecules from cold molecules without expending energy, thus bringing about a general decrease in entropy and violating the second law of thermodynamics.

[After James Clerk Maxwell.]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Maxwell's demon - an imaginary creature that controls a small hole in a partition that divides a chamber filled with gas into two parts and allows fast molecules to move in one direction and slow molecules to move in the other direction through the holeMaxwell's demon - an imaginary creature that controls a small hole in a partition that divides a chamber filled with gas into two parts and allows fast molecules to move in one direction and slow molecules to move in the other direction through the hole; this would result in one part of the container becoming warmer and the other cooler, thus decreasing entropy and violating the second law of thermodynamics
Mentioned in ?
References in periodicals archive ?
Science and Technology: ARCHIMEDES' PRINCIPLE/SCREW, BISHOP'S RING, COULOMB'S LAW, EINSTEIN'S PHOTOELECTRIC EQUATION, EVE'S CONSTANT, GAUSE'S PRINCIPLE, GOLDBEATER'S SKIN, GOLDSCHMIDT'S PROCESS, HALLEY'S METHOD, HENRY'S LAW, HEISENBERG'S PRINCIPLE, HUBBLE'S CONSTANT, HUYGHENS' PRINCIPLE, KELVIN'S LAW, KIRCHOFF'S LAW, MAXWELL'S DEMON, NEWTON'S DISC, NEWTON'S LAW OF COOLING/MOTION, OLDHAM'S COUPLING, PASCHEN'S LAW, SCHRODINGER'S CAT/WAVE EQUATION, WALLACE'S LINE, WEBER'S LINE, ZOLLNER'S LINES (optical illusion)
HUXLEY'S CHURCH AND MAXWELL'S DEMON: From Theistic Science to Naturalistic Science by Matthew Stanley.
Maxwell's demon may capitalize on its knowledge about one particle, Landauer said, but the demon must use up the energy it gained when it scrubs that information from its finite memory and turns its attention to the next particle.
"Kelvin, Thermodynamics and the Natural World" is completed by a full biography, overviews of various monuments to his memory, and short 'Stories in Pictures' on the Atlantic cable, Maxwell's Demon, the universities associated with the development of thermodynamics and the Royal Society of Edinburgh.
Maxwell's demon uses information which supposedly increases entropy through gaining and encoding that knowledge but MaxEnt seems to indicate instead a net exchange of knowledge and complexity which then leads to the question of what effect self-knowledge has upon the greater system.
Maxwell's Demon and the Golden Apple: Global Discord in the New Millennium
Using the thought experiment known as "Maxwell's Demon," Craig explores the issue of energy transference and its role in understanding the "otherworld" into which energy moves.
Among the topics are redundancy in the English language, thermal agitation and Brownian motion, Maxwell's demon and the negentropy principle of information, the problem of computing, and the problem of very small distances.
Brillouin, Maxwell's Demon (Cannot Operate: Information and Entropy.
In thermodynamics there is a famous thought experiment that is relevant and prompts the question: Does DNA act as a modern-day "Maxwell's demon" (Smith, 2010), that is, as a nano-robot programmed to generate and maintain particular structures and processes in its system, using information and energy to lower entropy, for a period of time?
Maxwell's Demon is a thought experiment intended by J.