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Classical Physics papers — page 118

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An Alternative to Maxwell's Displacement Current
Though sufficient for local conservation of charge, we show that Maxwells displacement current is not necessary. An alternative to the Ampere Maxwell equation is exhibited and the alternative s…
Alan M. WolskyNov 3, 2014
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Realizing the Willis equations with pre-stresses
This paper proves that the linear elastic behavior of the material with inhomogeneous pre-stresses can be described by the Willis equations. In this case, the additional terms in the Willis…
Zhihai Xiang, Ruiwen YaoNov 2, 2014
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Extraordinary focusing of sound above a soda can array without time reversal
Recently, Lemoult et al. [Phys. Rev. Lett. 107, 064301 (2011)] used time reversal to focus sound above an array of soda cans into a spot much smaller than the acoustic wavelength in air. In this…
A. A. Maznev, Gen Gu, Shu-yuan Sun et al.Nov 1, 2014
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Stored energies in electric and magnetic current densities for small antennas
Electric and magnetic currents are essential to describe electromagnetic stored energy, as well as the associated quantities of antenna Q and the partial directivity to antenna Q-ratio, D/Q, for…
B. L. G. Jonsson, Mats GustafssonOct 31, 2014
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On the energy partition in oscillations and waves
A class of generally nonlinear dynamical systems is considered, for which the Lagrangian is represented as a sum of homogeneous functions of the displacements and their derivatives. It is shown that…
Leonid SlepyanOct 30, 2014
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The Broken Engine of Szilard
A crucial step in the operation of the Szilard engine is the isothermal expansion of a single particle system. This expansion, seemingly a natural consequence, is unable to proceed when the piston is…
Quanmin GuoOct 29, 2014
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Huygens synchronization of two pendulum clocks
The synchronization of two pendulum clocks hanging from a wall was first observed by Huygens during the XVII century. This type of synchronization is observed in other areas, and is fundamentally…
Henrique M. Oliveira, Luís V. MeloOct 29, 2014
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Numerical method for solving electromagnetic scattering problem by many small impedance bodies
In this paper, we study the problem of electromagnetic (EM) wave scattering by many small impedance bodies. A numerical method for solving this problem is presented. The problem is solved under the…
Nhan TranOct 28, 2014
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Energy conservation for a radiating charge in classical electrodynamics
It is shown that the well-known disparity in classical electrodynamics between the power radiated in electromagnetic fields and the power-loss, as calculated from the radiation reaction on a charge…
Ashok K. SingalOct 28, 2014
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Electric field of a point charge in truncated hyperbolic motion
We find the electric field of a point charge in `truncated hyperbolic motion', in which the charge moves at a constant velocity followed by motion with a constant acceleration in its…
Jerrold FranklinOct 27, 2014
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Interaction of a Magnet and a Point Charge: Unrecognized Internal Electromagnetic Momentum
Whereas nonrelativistic mechanics always connects the total momentum of a system to the motion of the center of mass, relativistic systems, such as interacting electromagnetic charges, can have…
Timothy H. BoyerOct 26, 2014
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General Navier-Stokes-like Momentum and Mass-Energy Equations
A new system of general Navier-Stokes-like equations is proposed to model electromagnetic analogous to hydrodynamic. While most attempts to derive analogues of hydrodynamic to electromagnetic, and…
Jorge MonrealOct 22, 2014
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Partial wave series expansions in spherical coordinates for the acoustic field of vortex beams generated from a finite circular aperture
Stemming from the Rayleigh-Sommerfeld surface integral, the addition theorems for the spherical wave and Legendre functions, and a weighing function describing the behavior of the radial component of…
F. G. MitriOct 22, 2014
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Comments on initial conditions for the Abraham-Lorentz(-Dirac) equation
An accelerating electric charge coupled to its own electromagnetic (EM) field both emits radiation and experiences the radiation's reaction as a (self-)force. Considering the system from an…
Ofek BirnholtzOct 21, 2014
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Concentrator of elastic waves
This article is dedicated to an opportunity of concentrating elastic waves in the iron and water cones on the square of the cone vertex of the order of one square centimeter. The square of the base…
S. N. DolyaOct 21, 2014
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Wave Propagation in 1-D Spiral geometry
In this article, we investigate the wave equation in spiral geometry and study the modes of vibrations of a one-dimensional (1-D) string in spiral shape. Here we show that the problem of wave…
Deep Chatterjee, Rajesh K. NayakOct 18, 2014
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Acoustic interaction forces and torques acting on suspended spheres in an ideal fluid
In this paper, the acoustic interaction forces and torques exerted by an arbitrary time-harmonic wave on a set of N spheres suspended in an inviscid fluid are theoretically analyzed. In so doing, we…
J. Henrique Lopes, M. Azarpeyvand, G. T. SilvaOct 15, 2014
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Deformations of one-dimensional block media
The paper gives a description of wave propagation in discrete-periodic one-dimensional media with block structure. For one-dimensional problems mathematical models are proposed that describe block…
Nadezhda AleksandrovaOct 14, 2014
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Calculation of Coupling Capacitance in Planar Electrodes
We show how capacitance can be calculated simply and efficiently for electrodes cut in a 2-dimensional ground plane. These results are in good agreement with exact formulas and numerical simulations.
John M. Martinis, Rami Barends, Alexander N. KorotkovOct 10, 2014
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Faraday Induction and the Current Carriers in a Circuit
In this article, it is pointed out that Faraday induction can be treated from an untraditional, particle-based point of view. The electromagnetic fields of Faraday induction can be calculated…
Timothy H. BoyerOct 5, 2014
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Kirchhoff voltage law corrected for radiating circuits
When a circular loop composed by a RLC is put to oscillate, the oscillation will eventually vanish in an exponentially decaying current, even considering superconducting wires, due to the emission of…
Vitor Lara, Kaled DechoumOct 2, 2014
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Partial-Wave Series Expansion and Angular Spectrum Decomposition Formalisms for Acoustical Beams
Complex weights factors (CWFs) that fully define the incident beam independent of the presence of a scatterer, may be represented mathematically by either a partial-wave series expansion (PWSE) of…
F. G. MitriOct 1, 2014
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Scattering mean-free path in continuous complex media: beyond the Helmholtz equation
We present theoretical calculations of the ensemble-averaged (a.k.a. effective or coherent) wavefield propagating in a heterogeneous medium considered as one realization of a random process. In the…
Ibrahim Baydoun, Diego Baresch, Romain Pierrat et al.Sep 26, 2014
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Does Bohm's Quantum Force Have a Classical Origin?
In the de Broglie - Bohm formulation of quantum mechanics, the electron is stationary in the ground state of the hydrogen atom, because the quantum force exactly cancels the Coulomb attraction of the…
David C. LushSep 26, 2014
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Electromagnetic force and torque in Lorentz and Einstein-Laub formulations
The Lorentz force law of classical electrodynamics requires the introduction of hidden energy and hidden momentum in situations where an electric field acts on a magnetic material. In contrast, the…
Masud MansuripurSep 20, 2014
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