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Classical Physics papers — page 181

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Comparison of Methods for Characterizing Sound Absorbing Materials
Sound absorbing materials are usually defined by five parameters: open porosity, static airflow resistivity, tortuosity, and two characteristic lengths. In recent decades, different methods have been…
Yacoubou Salissou, Raymond PannetonNov 27, 2006
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On Variational Micro-Macro Models and their Application to Polycrystals
Some variational micro-macro models are briefly reviewed: it is shown how, starting from the Taylor model and passing through the relaxed Taylor model, a consistent intermediate between Taylor's…
Mayeul Arminjon, Didier ImbaultNov 24, 2006
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Classical mechanics of dipolar asymmetric top molecules in collinear static electric and nonresonant linearly polarized laser fields: energy-momentum diagrams, bifurcations and accessible configuration space
We study classical energy-momentum (E-m) diagrams for rotational motion of dipolar asymmetric top molecules in strong external fields. Static electric fields, nonresonant linearly polarized laser…
Carlos A. Arango, Gregory S. EzraNov 23, 2006
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Maximum entropy principle and texture formation
The macro-to-micro transition in a heterogeneous material is envisaged as the selection of a probability distribution by the Principle of Maximum Entropy (MAXENT). The material is made of…
Mayeul Arminjon, Didier ImbaultNov 23, 2006
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Physical Meaning and Experimental Check of a Variational Principle for Macro-to-Micro Transition
It is argued that, for strongly non-linear behaviors, a fully deterministic position can hardly be maintained in the micro-macro transitions. This is due to the lack of information on the relevant…
Mayeul Arminjon, Didier ImbaultNov 23, 2006
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The Connection Between Inertial Forces and the Vector Potential
. The inertia property of matter is discussed in terms of a type of induction law related to the extended charged particle's own vector potential. Our approach is based on the Lagrangian…
Alexandre A. Martins, Mario J. PinheiroNov 17, 2006
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On Impedance Bandwidth of Resonant Patch Antennas Implemented Using Structures with Engineered Dispersion
We consider resonant patch antennas, implemented using loaded transmission-line networks and other exotic structures having engineered dispersion. An analytical expression is derived for the ratio of…
Pekka Ikonen, Pekka Alitalo, Sergei TretyakovNov 10, 2006
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Derivation of magnetic Coulomb's law for thin, semi-infinite solenoids
It is shown that the magnetic force between thin, semi-infinite solenoids obeys a Coulomb-type law, which corresponds to that for magnetic monopoles placed at the end points of each solenoid. We…
Masao KitanoNov 10, 2006
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On the similarity solutions for a steady MHD equation
In this paper, we investigate the similarity solutions for a steady laminar incompressible boundary layer equations governing the Magnetohydrodynamic (MHD) flow near the forward stagnation point of…
Jean-David HoernelNov 6, 2006
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Penrose-Carter diagram for an uniformly accelerated observer
An uniformly accelerated observer can build his proper system of coordinates in a delimited sector of the flat Minkowski spacetime. The properties of the position and time coordinate lines for such…
Claude SemayNov 3, 2006
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Quantum mechanical description of waveguides
In this paper, applying the spinor representation of the electromagnetic field, we present a quantum-mechanical description of waveguides. As an example of application, a potential qubit generated…
Zhi-Yong Wang, Cai-Dong Xiong, Bing HeNov 2, 2006
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Temperature Effects on Mechanical Properties of Zinc Dithiophosphate Tribofilms
Nanoindentation tests were performed at several temperatures (24 to 80degC) on one antiwear zinc dialkyl-dithiophosphate (ZDTP) tribofilm using a Nanoindenter XP (R) entirely set into a climatic…
Karim Demmou, Sandrine Bec, Jean-Luc Loubet et al.Nov 2, 2006
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Hamiltonians and Lagrangians of non-autonomous one-dimensional mechanical systems
It is shown that a given non-autonomous system of two first-order ordinary differential equations can be expressed in Hamiltonian form. The derivation presented here allow us to obtain previously…
G. F. Torres del Castillo, I. Rubalcava GarciaNov 2, 2006
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Mirror potentials in classical mechanics
It is shown that for a central potential that is an injective function of the radial coordinate, a second central potential can be found that leads to trajectories in the configuration space and the…
G. F. Torres del Castillo, I. Rubalcava GarciaOct 26, 2006
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Stability Analysis of an Inflatable Vacuum Chamber
A light-weight "inflatable" tensioned-membrane-structure vacuum container is proposed and its stability is analyzed. The proposed structure consists of a pressurized lobed cylindrical…
Sean A. BartonOct 24, 2006
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Recent developments in premetric classical electrodynamics
Classical electrodynamics can be based on the conservation laws of electric charge and magnetic flux. Both laws are independent of the metric and the linear connection of spacetime. Within the…
Friedrich W. Hehl, Yakov Itin, Yuri N. ObukhovOct 24, 2006
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On the equipartition of kinetic energy in an ideal gas mixture
A refinement of an argument due to Maxwell for the equipartition of kinetic energy in a mixture of ideal gases with different masses is proposed. The argument is elementary, yet it may work as an…
L. PelitiOct 23, 2006
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Nomarski imaging interferometry to measure the displacement field of MEMS
We propose to use a Nomarski imaging interferometer to measure the out-of-plane displacement field of MEMS. It is shown that the measured optical phase arises both from height and slope gradients.…
Fabien Amiot, Jean Paul RogerOct 23, 2006
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Magnetic field with cylindrical symmetry
This short article contains the derivation of a general formula for the magnetostatic field in the neighbourhood of an axis of symmetry.
E. RanzOct 22, 2006
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Negative reflections of electromagnetic waves in chiral media
We investigate the reflection properties of electromagnetic/optical waves in isotropic chiral media. When the chiral parameter is strong enough, we show that an unusual negative reflection…
Chao Zhang, Tie Jun CuiOct 22, 2006
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Applications of the Flexural Impulse Response Functions in the Time Domain
This work addresses the response functions for infinite beams and plates with a force excitation at the origin of the coordinate system and its application to time reversal and time frequency…
Richard BuessowOct 20, 2006
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The Adiabatic Invariance of the Action Variable in Classical Dynamics
We consider one-dimensional classical time-dependent Hamiltonian systems with quasi-periodic orbits. It is well-known that such systems possess an adiabatic invariant which coincides with the action…
Clive G. Wells, Stephen T. C. SiklosOct 11, 2006
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Some Variations on Maxwell's Equations
In the first sections of this article, we discuss two variations on Maxwell's equations that have been introduced in earlier work--a class of nonlinear Maxwell theories with well-defined Galilean…
Giorgio A. Ascoli, Gerald A. GoldinOct 3, 2006
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Two falling-chain demonstrations based on Einstein's equivalence principle
Simple demonstrations based on the equivalence principle are given of how a folded chain and a horizontal flat chain fall down when one chain end is fixed to a rigid support.
Chun Wa Wong, Seo Ho Youn, Kosuke YasuiSep 25, 2006
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Relativistic Temperature Transformation Revisited, One hundred years after Relativity Theory
An attempt has been made to find a consistent and logical form for relativistic temperature transformation. Other works in this area have been discussed. Our approach is based on the kinetic theory…
M. Khaleghy, F. QassemiSep 22, 2006
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