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Classical Physics papers — page 192

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Lorentz-contraction formula from non-simultaneous events
We present a derivation of the relativistic length-contraction formula based on Lorentz space-time transformations on non-simultaneous events. Our derivation avoids the disputable story about the…
Aleksandar GjurchinovskiMar 18, 2005
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On "gauge renormalization" in classical electrodynamics
In this paper we pay attention to the inconsistency in the derivation of the symmetric electromagnetic energy-momentum tensor for a system of charged particles from its canonical form, when the…
Alexander L. KholmetskiiMar 9, 2005
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Contribution to harmonic balance calculations of periodic oscillation for self-sustained musical instruments with focus on single-reed instruments
The harmonic balance method (HBM) was originally developed for finding periodic solutions of electronical and mechanical systems under a periodic force, but has later been adapted to self-sustained…
Snorre Farner, Christophe Vergez, Jean Kergomard et al.Mar 7, 2005
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Essential spectrum in vibrations of thin shells in membrane approximation. Propagation of singularities
The spectral problem of thin elastic shells in membrane approximation does not satisfy the classical properties of compactness and so there exists an essential spectrum. In the first part, we propose…
Alain CampbellFeb 28, 2005
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Lorenz or Coulomb in Galilean Electromagnetism ?
Galilean Electromagnetism was discovered thirty years ago by Levy-Leblond & Le Bellac. However, these authors only explored the consequences for the fields and not for the potentials. Following De…
Germain RousseauxFeb 24, 2005
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Field of the Current Pulse Moving Along the Straight Line with Super Light Velocity
A simulation of electric current pulses formed by a packet of gamma-quanta moving through an absorptive medium is presented. The electromagnetic fields of the current pulse moving along the straight…
F. F. ValievFeb 22, 2005
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Topology hidden behind the breakdown of adiabaticity
For classical Hamiltonian systems, the adiabatic condition may fail at some critical points. However, the breakdown of the adiabatic condition does not always make the adiabatic evolution be…
Li-Bin Fu, Shi-Gang ChenFeb 21, 2005
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Use of time-correlated single photon counting detection to measure the speed of light in water
Traditional methods for measuring the speed of light in dispersive media have been based on the detection of interference between light waves emitted from the same source. In the present study the…
Pedro L. Muino, Aaron M. Thompson, Robert J. BuenkerFeb 18, 2005
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A Dyad Theory of Hydrodynamics and Electrodynamics
The dyadic calculus is developed in a form suitable for the description of physical relations in curved space. The 4-space equations of hydrodynamics and electrodynamics are constructed using this…
Preston JonesFeb 14, 2005
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Unidirectional Magnetostatic Waves
Dispersion characteristics of magnetostatic waves in tangentially magnetized to saturation ferrite film with a "magnetic wall" condition (tangential component of microwave magnetic field is…
E. H. Lock, A. V. VashkovskyFeb 8, 2005
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Spacetime Deformations and Electromagnetism in Material Media
This paper is intended to investigate the relation between electrodynamics in anisotropic material media and its analogous formulation in an spacetime, with non-null Riemann curvature tensor. After…
R. da Rocha, I. L. FreireFeb 3, 2005
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A note on Dolby and Gull on radar time and the twin "paradox"
Recently a suggestion has been made that standard textbook representations of hypersurfaces of simultaneity for the travelling twin in the twin "paradox" are incorrect. This suggestion is…
Antony EagleFeb 2, 2005
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Locating where Transient Signals Travel in Inhomogeneous Media
Locating where transient signals travel between a source and receiver requires a final step that is needed after using a theory of diffraction such as the integral theorem of Helmholtz and Kirchhoff.…
John L. SpiesbergerJan 31, 2005
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On momentum and energy of a non-radiating electromagnetic field
This paper inspects more closely the problem of the momentum and energy of a bound (non-radiating) electromagnetic (EM) field. It has been shown that for an isolated system of non-relativistic…
Alexander L. KholmetskiiJan 31, 2005
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Illustrations of the Relativistic Conservation Law for the Center of Energy
The relativistic conservation law involving the center of energy is reviewed and illustrated using simple examples from classical electromagnetic theory. It is emphasized that this conservation law…
Timothy H. BoyerJan 26, 2005
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The Ascending Double-Cone: A Closer Look at a Familiar Demonstration
The double-cone ascending an inclined V-rail is a common exhibit used for demonstrating concepts related to center-of-mass in introductory physics courses. While the conceptual explanation is…
Sohang C. Gandhi, Costas J. EfthimiouJan 25, 2005
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Empty space-time, general relativity principle and covariant ether theories
We look for the properties of empty space-time proceeding from the general relativity principle. An infinite number of the so-called covariant ether theories (CETs) has been found, which, like the…
Alexander L. KholmetskiiJan 12, 2005
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Evidence from the Special Relativity and Blackbody Radiation Theories for the Existence of Photons Possessing Zero Kinetic Energy
The traditional interpretation of radiative emission and absorption asserts that photons are created and annihilated in such processes. A Gedanken experiment is considered in which kinetic energy…
Robert J. BuenkerJan 11, 2005
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A Hilbert-space formulation of and variational principle for spontaneous wiggler radiation
Within the framework of Hilbert space theory, we derive a maximum-power variational principle applicable to classical spontaneous radiation from prescribed harmonic current sources. Results are first…
A. E. Charman, J. S. WurteleJan 6, 2005
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Numerical study of the temperature and porosity effects on the fracture propagation in a 2D network of elastic bonds
This article reports results concerning the fracture of a 2d triangular lattice of atoms linked by springs. The lattice is submitted to controlled strain tests and the influence of both porosity and…
Harold Auradou, Maria Zei, Elisabeth BouchaudJan 4, 2005
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Transverse Solutions of the Vector Laplace and Helmholtz Equations for Spherical Coordinates and Boundary Conditions with Azimuthal Symmetry
A scalar field method to obtain transverse solutions of the vector Laplace and Helmholtz equations in spherical coordinates for boundary-value problems with azimuthal symmetry is described. Neither…
Ernesto A. MatuteDec 20, 2004
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Projection of relativistically moving objects on a two-dimensional plane, the `train' paradox and the visibility of the Lorentz contraction
Although many papers have appeared on the theory of photographing relativistically moving objects, pioneered by the classic work of Penrose and Terrell, three problems remain outstanding. (1) There…
E. B. Manoukian, S. SukkhasenaDec 14, 2004
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Unipolar components travelling at the speed of light in vacuo
We describe a physical situation where the time integral of the electric field of an electromagnetic wave packet is not zero. More specifically, the non-oscillating component of the Fourier spectrum,…
C. Varin, M. PichéDec 6, 2004
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Relativity principles in 1+1 dimensions and differential aging reversal
We study the behavior of clocks in 1+1 spacetime assuming the relativity principle, the principle of constancy of the speed of light and the clock hypothesis. These requirements are satisfied by a…
E. MinguzziDec 1, 2004
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Gravity between Internally Electrodynamic Particles
We present a first-principles' prediction that two charged particles of masses M1 and M2 separated R apart in a dielectric vacuum act on each other always an attractive force in addition to…
J. X. Zheng-Johansson, P-I. JohanssonNov 29, 2004
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