Results 61 to 70 of about 5,026,485 (166)
Generalized Second Law of Thermodynamics for FRW Cosmology with Power-Law Entropy Correction
, 2012 In this work, we have considered the power law correction of entropy on the horizon. If the flat FRW Universe is filled with the n components fluid with interactions, the GSL of thermodynamics for apparent and event horizons have been investigated for ...
Chattopadhyay, Surajit +4 more
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Mechanical Foundations of the Generalized Second Law and the Irreversibility Principle
FoundationsWe follow the Boltzmann-Clausius-Maxwell (BCM) proposal to establish the generalized second law (GSL) that is applicable to a system of any size, including a single particle system as our example establishes, and that supercedes the celebrated second law
Purushottam Das Gujrati
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Fluctuation, Dissipation and the Arrow of Time
Entropy, 2011 The recent development of the theory of fluctuation relations has led to new insights into the ever-lasting question of how irreversible behavior emerges from time-reversal symmetric microscopic dynamics.
Peter Hänggi, Michele Campisi
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Generalized second law of thermodynamics in scalar-tensor gravity
, 2014 Within the context of scalar-tensor gravity, we explore the generalized second law (GSL) of gravitational thermodynamics. We extend the action of ordinary scalar-tensor gravity theory to the case in which there is a non-minimal coupling between the ...
Abdolmaleki, A., Karami, K., Najafi, T.
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Entropy and its Application to Urban Systems
Entropy, 2019 Since its conception over 150 years ago, entropy has enlightened and confused scholars and students alike, from its origins in physics and beyond. More recently, it has been considered within the urban context in a rather eclectic range of applications ...
Ben Purvis, Yong Mao, Darren Robinson
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Generalized second law for cosmology
Physical Review D, 2016 We conjecture a novel Generalized Second Law that can be applied in cosmology, regardless of whether an event horizon is present: the generalized entropy increases monotonically outside of certain hypersurfaces we call past Q-screens. A past Q-screen is foliated by surfaces whose generalized entropy (sum of area and entanglement entropy) is stationary ...
Bousso, Raphael, Engelhardt, Netta
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Entropy, 2015 An information-theoretic perspective on coarse-graining is presented. It starts with an information characterization of configurations at the micro-level using a local information quantity that has a spatial average equal to a microscopic entropy. With a
Kristian Lindgren
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Entropy generation analysis in an evaporative air-cooled heat exchanger
Journal of Thermal Science and Technology, 2014 In the present study, air-side entropy generation rate for an evaporative air-cooled heat exchanger has been investigated using thermodynamic second-law analysis.
Shoeib MAHJOUB +3 more
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A Maxwellian Valve based on centrifugal forces
Entropy, 2004 : A mechanism is described which can create a chemical potential gradient from a single heat reservoir. The mechanism is equivalent to a Maxwellian valve.
Lyndsay G.M. Gordon
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Cassini's second and third laws [PDF]
The Astronomical Journal, 1966 In 1693 G. D. Cassini published the three following empirical laws on the Moon’s rotational motion: (1) The Moon rotates uniformly about its polar axis with a rotational period equal to the mean sidereal period of its orbit about the earth. (2) The inclination of the Moon’s equator to the ecliptic is a constant angle approximately 1 ...
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