Results 31 to 40 of about 5,026,485 (166)

Newton's Second Law [PDF]

open access: yes
This lesson introduces students to Sir Isaac Newton's Second Law of Motion. Topics include the two ways to study the dynamics of a system in which there is motion, a brief description of Newton's work in studying and measuring the motion of objects, and ...
John Pratte
core   +1 more source

Assesment of Thermodynamic Irreversibility in a Micro-Scale Viscous Dissipative Circular Couette Flow

open access: yesEntropy, 2018
We investigate the effect of viscous dissipation on the thermal transport characteristics of heat and its consequence in terms of the entropy-generation rate in a circular Couette flow.
Pranab Kumar Mondal, Somchai Wonwises
doaj   +1 more source

Discipline in Thermodynamics

open access: yesEnergies, 2020
Thermodynamics is a discipline, with unambiguous concepts, words, laws and usefulness. Today it is in danger of becoming a Tower of Babel. Its key words are being pasted brazenly on new concepts, to promote them with no respect for their proper meaning ...
Adrian Bejan
doaj   +1 more source

Hierarchical Structure of Generalized Thermodynamic and Informational Entropy

open access: yesEntropy, 2018
The present research aimed at discussing the thermodynamic and informational aspects of entropy concept to propose a unitary perspective of its definitions as an inherent property of any system in any state.
Pierfrancesco Palazzo
doaj   +1 more source

Decoherence, Chaos, and the Second Law

open access: yes, 1994
We investigate implications of decoherence for quantum systems which are classically chaotic. We show that, in open systems, the rate of von Neumann entropy production quickly reaches an asymptotic value which is: (i) independent of the system ...
A. O. Caldeira   +25 more
core   +2 more sources

Gravitational Entropy and the Second Law of Thermodynamics [PDF]

open access: yes, 2014
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.
Moffat, J. W.
core   +3 more sources

Thermodynamic cost of external control

open access: yesNew Journal of Physics, 2017
Artificial molecular machines are often driven by the periodic variation of an external parameter. This external control exerts work on the system of which a part can be extracted as output if the system runs against an applied load.
Andre C Barato, Udo Seifert
doaj   +1 more source

A formulação ab-initio da segunda lei da termodinâmica The ab-initio formulation of the second law of thermodynamics

open access: yesQuímica Nova, 1998
This paper deals with Carathédory's formulation of the second law of thermodynamics. The material is presented in a didatical way, which allows a second year undergraduate student to follow the formalism.
J. P. Braga
doaj   +1 more source

50 Years After the 25th Amendment: How to Improve Presidential Succession [PDF]

open access: yes, 2019
Pamphlet summarizing the Second Succession Clinic\u27s ...
Second Fordham University School of Law Clinic on Presidential Succession
core   +1 more source

Quantum Game Beats Classical Odds—Thermodynamics Implications

open access: yesEntropy, 2015
A quantum game is described making use of coins embodied as entangled Fermions in a potential energy well. It is shown that the odds are affected by the Pauli Exclusion Principle.
George Levy
doaj   +1 more source

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