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Classical Physics papers — page 149

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Finite volume schemes for dispersive wave propagation and runup
Finite volume schemes are commonly used to construct approximate solutions to conservation laws. In this study we extend the framework of the finite volume methods to dispersive water wave models, in…
Denys Dutykh, Theodoros Katsaounis, Dimitrios MitsotakisJan 10, 2011
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Charged Radial Infall for Spherical Central Bodies
A massive, charged, spherical central body can be neutralized by attracting particles of opposite charge. We calculate the time it takes to neutralize these central bodies using classical mechanics,…
J. Franklin, F. Morton-ParkJan 7, 2011
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Harry Potter's Cloak
The magic "Harry Potter's cloak" has been the dream of human beings for really long time. Recently, transformation optics inspired from the advent of metamaterials offers great…
X. F. Zhu, B. Liang, J. Tu et al.Jan 5, 2011
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Work-Energy theorem in rotational reference frames
In standard textbooks of college physics, the Work Energy Theorem is usually presented for inertial frames of references and it is clear that energy is conserved when there is not net work of…
D. M. Fernández, M. F. Carusela, C. D. El HasiDec 30, 2010
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Ellipsoidal anisotropies in linear elasticity Extension of Saint Venant's work to phenomenological modelling of materials
Several families of elastic anisotropies were introduced by Saint Venant (1863) for which the polar diagram of elastic parameters in different directions of the material (indicator surface) are…
Ahmad PouyaDec 23, 2010
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On the theory of polarization radiation generated in the media with sharp boundaries
Polarization radiation arising when a charged particle moves uniformly in vacuum nearby the media possessing a finite permittivity ε(ω) = ε + i ε and sharp boundaries is…
Dmitry KarlovetsDec 22, 2010
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Comment on 'A close examination of the motion of an adiabatic piston' by Eric A. Gislason [Am. J. Phys. 78, 995-1001 (2010)]
A recent paper by Gislason published in Am. J. Phys. deals with the celebrated example of the so-called "adiabatic piston", a system involving two ideal gases contained in a horizontal…
Rodrigo de Abreu, Vasco GuerraDec 22, 2010
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A note on hypoplastic yielding
This note discusses briefly the definition of yield surface in hypoplasticity in connection with the physical notion of yielding. The relation of yielding with the vanishing of the material time…
José Jorge NaderDec 20, 2010
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Entropy generation and jet engine optimization
In 2009, it was shown that, with an original approach to hydrodynamic cavitation, a phenomenological model was realized in order to compute some of the physical parameters needed for the design of…
Umberto LuciaDec 19, 2010
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Comments on "What the Electromagnetic Vector Potential Describes" by E. J. Konopinski
The seminal paper on the meaning of the vector potential by E. J. Konopinski is revisited. The full significance of this work has not been generally recognized to date. We first briefly review…
Paul J Cote, Mark A. JohnsonDec 16, 2010
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General Properties of Two-dimensional Conformal Transformation in Electrostatics
Electrostatic properties of two-dimensional nanosystems can be described by their geometry resonances. In this paper we prove that these modes as well as the corresponding eigenvalues are invariant…
Yong Zeng, Jinjie Liu, Douglas H. WernerDec 15, 2010
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In favour of the time variable in classical thermoDYNAMICS
A case for the teaching of classical thermodynamics with an explicit time variable, with phenomena involving changes in time, is made by presenting and solving a exercise in textbook style, and…
PierGianLuca Porta ManaDec 14, 2010
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Covariant Worldline Numerics for Charge Motion with Radiation Reaction
We develop a numerical formulation to calculate the classical motion of charges in strong electromagnetic fields, such as those occurring in high-intensity laser beams. By reformulating the dynamics…
C. Harvey, T. Heinzl, N. Iji et al.Dec 14, 2010
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Classical relativistic ideal gas in thermodynamic equilibrium in a uniformly accelerated reference frame
A classical (non-quantum-mechanical) relativistic ideal gas in thermodynamic equilibrium in a uniformly accelerated frame of reference is studied using Gibbs's microcanonical and grand canonical…
Domingo J. Louis-MartinezDec 14, 2010
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Angular momentum nonconservation and conservation in quasiclassical Positronium
It is shown that due to Thomas precession, angular momentum is not generally a constant of the motion in a quasiclassical model of the Positronium atom consisting of circular-orbiting point charges…
David C. LushDec 10, 2010
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Deriving the method of images for conductors
We start from the simple fact that the method of images can always be used to obtain Φσ (rin), which is the potential inside conductor produced by induced surface charges. We use this fact to…
Chyi-Lung Lin, Hsien-Yi LinDec 7, 2010
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The Galilean limits of Maxwell's equations
We show that if Maxwell's equations are expressed in a form independent of specific units, at least three Galilean limits can be extracted. The electric and magnetic limits can be regarded as…
Jose A. HerasDec 6, 2010
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The c equivalence principle and the correct form of writing Maxwell's equations
It is well-known that the speed cu=1/ε0μ0 is obtained in the process of defining SI units via action-at-a-distance forces, like the force between two static charges and the force between…
Jose A. HerasDec 6, 2010
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Can the Lorenz-gauge potentials be considered physical quantities?
Two results support the idea that the scalar and vector potentials in the Lorenz gauge can be considered to be physical quantities: (i) they separately satisfy the properties of causality and…
Jose A. Heras, Guillermo Fernandez-AnayaDec 6, 2010
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Detection of Solar and Lunar Tidal Forces via Non-resonant Oscillations of A Pendulum
The FFT power spectrum of time deflection data from a pendulum bob shows a broad structure in the micro-Hz regime is consistent with non-resonant response due to forced acceleration. Harmonic…
Timir Datta, Ming Yin, Mike Wescott et al.Nov 30, 2010
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Measurements on tones generated in a corrugated flow pipe with special attention to the influence of a low frequency oscillation
It is well known that an air flow in a corrugated pipe might excite the longitudinal acoustic modes of the pipe. In this letter is reported experiments where a low frequency, oscillating flow with…
Ulf R. Kristiansen, Pierre-Olivier Mattei, Cédric Pinhède et al.Nov 29, 2010
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Effect of near-wall treatments on airflow simulations
Airflow simulation results depend on a good prediction of near wall turbulence. In this paper a comparative study between different near wall treatments is presented. It is applied to two test cases:…
Najla El Gharbi, Rafik Absi, Ahmed Benzaoui et al.Nov 28, 2010
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Controlling elastic wave with isotropic transformation materials
There are great demands to design functional devices with isotropic materials, however the transformation method usually leads to anisotropic material parameters difficult to be realized in practice.…
Zheng Chang, Jin Hu, Gengkai Hu et al.Nov 25, 2010
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Tools for multiaxial validation of behavior laws chosen for modeling hyper-elasticity of rubber-like materials
We present an experimental approach to discriminate hyper-elastic models describing the mechanical behavior of rubber-like materials. An evaluation of the displacement field obtained by digital image…
Luc Chevalier, Yann MarcoNov 23, 2010
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Spurious causality hiding an action at a distance
The Coulomb/Gauss law given in the Maxwell equations describes a spatial relation between the electric field component E( r, t) and its source ρ( r, t) that is instantaneous,…
Chun Wa WongNov 20, 2010
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