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Classical Physics papers — page 187

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Digital Image Correlation used to Analyze the Multiaxial Behavior of Rubber-like Materials
We present an experimental approach to discriminate models describing the mechanical behavior of polymeric materials. A biaxial loading condition is obtained in a multiaxial testing machine. An…
Luc Chevalier, Sylvain Calloch, François Hild et al.Nov 17, 2005
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Fractional Ginzburg-Landau equation for fractal media
We derive the fractional generalization of the Ginzburg-Landau equation from the variational Euler-Lagrange equation for fractal media. To describe fractal media we use the fractional integrals…
Vasily E. Tarasov, George M. ZaslavskyNov 16, 2005
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Dynamics with Low-Level Fractionality
The notion of fractional dynamics is related to equations of motion with one or a few terms with derivatives of a fractional order. This type of equation appears in the description of chaotic…
Vasily E. Tarasov, George M. ZaslavskyNov 16, 2005
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Digital Image Correlation: From Displacement Measurement to Identification of Elastic Properties - A Review
The current development of digital image correlation, whose displacement uncertainty is well below the pixel value, enables one to better characterise the behaviour of materials and the response of…
François Hild, Stéphane RouxNov 14, 2005
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Identification of a Damage Law by Using Full-Field Displacement Measurements
It is proposed to identify damage variables and their growth with loading in two dimensions by only using full-field displacement measurements. The equilibrium gap method is used to estimate the…
Damien Claire, François Hild, Stéphane RouxNov 14, 2005
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Non-radiating and radiating configurations driven by left-handed metamaterials
It is shown that a pair of identical emitters (e.g. wire dipole antennas) in the focal points of a disc, made of left-handed metamaterial (a "perfect" lens), form a non-radiating…
A. D. Boardman, K. MarinovNov 13, 2005
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Formulating Initial and Boundary Effects for Maxwell Equations
In classical treatment of Maxwell equations, the initial and boundary conditions are introduced by mathematical consideration rather than strictly using the Maxwell equations. As a result, the…
Jianhua XiaoNov 13, 2005
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Inverse problem for the retarded field of an arbitrary moving charge
It is assumed that the Lienard-Wiechert fields of an arbitrary moving charge is measured or predefined as a function of time. The position of the charge is calculated as a function of the retarded…
V. Ya. Epp, T. G. MitrofanovaNov 12, 2005
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Do Maxwell's equations need revision? - A methodological note
We propose a modification of Maxwell's macroscopic fundamental set of equations in vacuum in order to clarify Faraday's law of induction. Using this procedure, the Lorentz force is no longer…
Mario J. PinheiroNov 11, 2005
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Multipolar radiation and the gauge invariant reduction of multipole tensors
Compact general formulae for the energy, momentum and angular momentum radiated by confined systems of charges and currents are presented in terms of their multipole Cartesian tensors. Besides the…
Constantin Vrejoiu, Cristian StoicaNov 10, 2005
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Constant of motion, Lagrangian and Hamiltonian of the gravitational attraction of two bodies with variable mass
The Lagrangian, the Hamiltonian and the constant of motion of the gravitational attraction of two bodies when one of them has variable mass is considered. The relative and center of mass coordinates…
Gustavo LopezNov 9, 2005
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Enhancing switching in bistable nanomechanical oscillators by geometrical resonance
It is shown how the cooperative effect of the geometrical resonance and stochastic resonance mechanisms explains recent results on bistable nanomechanical silicon oscillators (R. L. Badzey and P.…
Ricardo ChaconNov 9, 2005
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The Envelope of Projectile Trajectories in Midair
A classic problem of the motion of a point mass (projectile) thrown at an angle to the horizon is reviewed. The air drag force is taken into account with the drag factor assumed to be constant.…
Peter ChudinovNov 7, 2005
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Not so Classical Mechanics - Unexpected Symmetries of Classical Motion
A survey of topics of recent interest in Hamiltonian and Lagrangian dynamical systems, including accessible discussions of regularization of the central force problem; inequivalent Lagrangians and…
James T. WheelerNov 7, 2005
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On the physical meaning of the gauge conditions of Classical Electromagnetism : the hydrodynamics analogue viewpoint
Based on an analogy between Fluid Mechanics and Electromagnetism, we claim that the gauge conditions of Classical Electromagnetism are not equivalent contrary to the common belief. These…
Germain RousseauxNov 5, 2005
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Search for an equation of motion of a classical pointlike charge
In 1892 H.A. Lorentz started the search for a classical equation of motion for pointlike charged particles that takes into account the radiation reaction force. This search culminated in the…
Marijan Ribaric, Luka SustersicNov 4, 2005
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Inter-charge forces in relativistic classical electrodynamics: electromagnetic induction in different reference frames
The force due to electromagnetic induction on a test charge is calculated in different reference frames. The Faraday-Lenz Law and different formulae for the fields of a uniformly moving charge are…
J. H. FieldNov 2, 2005
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Influence of muscle preactivation of the lower limb on impact dynamics in case of frontal collision
Accidentology or shock biomechanics are research domains mainly devoted to the development of safety conditions for the users of various transport modes in case of an accident. The objective of this…
Martine Pithioux, Pascale Chavet, Nancy St-Onge et al.Oct 20, 2005
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A precision test of the isotropy of the speed of light using rotating cryogenic optical cavities
A test of Lorentz invariance for electromagnetic waves was performed by comparing the resonance frequencies of two stable optical resonators as a function of orientation in space. The crystalline…
S. Schiller, P. Antonini, M. OkhapkinOct 18, 2005
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Multipole Radiation in Lorentz Gauge
The multipole expansion for electromagnetic radiation, valid for all wave-lengths and all distances from bounded sources, is presented in Lorentz gauge, rather than the usual Coulomb gauge. This…
Howard J. SchnitzerOct 18, 2005
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Nonradiating toroidal structures
Some basic properties of nonradiating systems are considered. A simple connection is established between the existence of residual electromagnetic potentials and the current density spectrum of the…
A. D. Boardman, K. Marinov, N. Zheludev et al.Oct 17, 2005
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Dispersion properties of non-radiating configurations: Finite-Difference Time-Domain modeling
A finite-difference time-domain (FDTD) numerical analysis is used to demonstrate that a toroidal solenoid, coaxial with an electric dipole, is a remarkable non-radiating configuration. It can be used…
A. D. Boardman, K. Marinov, N. Zheludev et al.Oct 17, 2005
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Sur un effet physique attribuable uniquement au potentiel vecteur en électromagnétisme classique
We present the theory, the design and the discussion of an experiment which allows to choose between the local formulation of Riemann-Lorenz and the non-local formulation of Heaviside-Hertz in order…
Germain Rousseaux, Richard Kofman, Olivier MinazolliOct 15, 2005
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Observational Derivation of Einstein's``Law of the Constancy of the Velocity of Light in Vacuo"
On the basis of Galilean invariance and the Doppler formula, combined with an observational condition, it is shown that the constancy of the velocity of light in vacuo can be derived, together…
Claudia Pombo, Theo M. NieuwenhuizenOct 14, 2005
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The Explicit Simplified Interface Method for compressible multicomponent flows
This paper concerns the numerical approximation of the Euler equations for multicomponent flows. A numerical method is proposed to reduce spurious oscillations that classically occur around material…
Bruno Lombard, Rosa DonatOct 10, 2005
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