Results 21 to 30 of about 13,368 (281)

Radiation Entropy Bound from the Second Law of Thermodynamics

open access: yesEntropy, 2012
It has been suggested heuristically by Unruh and Wald, and independently by Page, that at given energy and volume, thermal radiation has the largest entropy. The suggestion leads to the corresponding universal bound on entropy of physical systems.
Itzhak Fouxon
doaj   +1 more source

Thermodynamics of Various Entropies in Specific Modified Gravity with Particle Creation

open access: yesAdvances in High Energy Physics, 2018
We consider the particle creation scenario in the dynamical Chern-Simons modified gravity in the presence of perfect fluid equation of state p=(γ-1)ρ. By assuming various modified entropies (Bekenstein entropy logarithmic entropy, power law correction ...
Abdul Jawad   +2 more
doaj   +1 more source

Thermodynamics in modified Brans–Dicke gravity with entropy corrections

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
In this paper, we investigate the thermodynamics in the frame-work of recently proposed theory called modified Brans–Dicke gravity (Kofinas et al. in Class Quantum Gravity 33:15, 2016).
Shamaila Rani   +3 more
doaj   +1 more source

"A calorie is a calorie" violates the second law of thermodynamics

open access: yesNutrition Journal, 2004
The principle of "a calorie is a calorie," that weight change in hypocaloric diets is independent of macronutrient composition, is widely held in the popular and technical literature, and is frequently justified by appeal to the laws of thermodynamics ...
Fine Eugene J, Feinman Richard D
doaj   +1 more source

Gravitational Entropy and the Second Law of Thermodynamics

open access: yesEntropy, 2015
The spontaneous violation of Lorentz and diffeomorphism invariance in a phase near the big bang lowers the entropy, allowing for an arrow of time and the second law of thermodynamics. The spontaneous symmetry breaking leads to
John W. Moffat
doaj   +1 more source

Helping Pregraduate Students Reach Deep Understanding of the Second Law of Thermodynamics

open access: yesEducation Sciences, 2021
Pregraduate students often have low success expectations toward their thermodynamics courses, which are often considered too abstract and remarkably difficult to understand. For this reason, they may not even try to reach any level of comprehension while
Lorena Atarés   +5 more
doaj   +1 more source

Bayesian second law of thermodynamics

open access: yesPhysical Review E, 2016
We derive a generalization of the Second Law of Thermodynamics that uses Bayesian updates to explicitly incorporate the effects of a measurement of a system at some point in its evolution. By allowing an experimenter's knowledge to be updated by the measurement process, this formulation resolves a tension between the fact that the entropy of a ...
Bartolotta, Anthony   +3 more
openaire   +6 more sources

Heat Transfer and Second Law Analyses for Laminar Film Condensation on a Finite-Size Horizontal Disk

open access: yesJournal of Thermal Science and Technology, 2007
This study applies the first and second laws of thermodynamics to investigate the problem of steady filmwise condensation on a finite-size horizontal disk.
Tong-Bou CHANG
doaj   +1 more source

On Thermodynamics, Entropy and Evolution of Biological Systems: What Is Life from a Physical Chemist's Viewpoint

open access: yesEntropy, 1999
: Life in the universe originated and is evolving in accordance with the general laws of nature, specifically, the law of temporal hierarchies and the second law of thermodynamics.
Georgi P. Gladyshev
doaj   +1 more source

The generalized second law of thermodynamics with Barrow entropy

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We investigate the validity of the generalized second law of thermodynamics, applying Barrow entropy for the horizon entropy. The former arises from the fact that the black-hole surface may be deformed due to quantum-gravitational effects, quantified by ...
Emmanuel N. Saridakis, Spyros Basilakos
doaj   +1 more source

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