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Classical Physics papers — page 160

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How to Complement the Description of Physical Universe?
Which non-local hidden variables could complement the description of physical Universe? The model of extended Newtonian dynamics is presented.
T. F. KamalovJun 18, 2009
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Brittle/quasi-brittle transition in dynamic fracture: An energetic signature
Dynamic fracture experiments were performed in PMMA over a wide range of velocities and reveal that the fracture energy exhibits an abrupt 3-folds increase from its value at crack initiation at a…
Julien Scheibert, Claudia Guerra, Fabrice Célarié et al.Jun 16, 2009
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The rolling sphere and the quantum spin
We consider the problem of a sphere rolling of a curved surface and solve it by mapping it to the precession of a spin 1/2 in a magnetic field of variable magnitude and direction. The mapping can be…
Alberto G. Rojo, Anthony M. BlochJun 16, 2009
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Two-fluid barotropic models for powder-snow avalanche flows
In the present study we discuss several modeling issues of powder-snow avalanche flows. We take a two-fluid modeling paradigm. For the sake of simplicity, we will restrict our attention to barotropic…
Yannick Meyapin, Denys Dutykh, Marguerite GisclonJun 11, 2009
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Lorentz contraction, Bell's spaceships, and rigid body motion in special relativity
The meaning of Lorentz contraction in special relativity and its connection with Bell's spaceships parable is discussed. The motion of Bell's spaceships is then compared with the accelerated…
Jerrold FranklinJun 10, 2009
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Nucleation of spherical shell-like interfaces by second gradient theory: numerical simulations
The theory of second gradient fluids (which are able to exert shear stresses also in equilibrium conditions) allows us: (i) to describe both the thermodynamical and the mechanical behavior of systems…
Francesco Dell'Isola, Henri Gouin, Giacomo RotoliJun 10, 2009
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Electric Potential Due to a System of Conducting Spheres
Equations describing the complete series of image charges for a system of conducting spheres are presented. The method of image charges, originally described by J. C. Maxwell in 1873, has been and…
Philip T. Metzger, John E. LaneJun 9, 2009
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Visualizing Imaginary Rotations and Applications in Physics
I discuss the notions of traditional vector length, and suggest defining a complex vector length for complex vectors, as opposed to the traditional Hermitian real length. The advantages of this are…
Eli LanseyJun 8, 2009
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Renormalization in Lorentz-Abraham-Dirac Equation, Describing Radiation Force in Classical Electrodynamics (in Russian)
While he derived the equation for the radiation force, Dirac (1938) mentioned a possibility to use different choices for the 4-momentum of an emitting electron. Particularly, the 4-momentum could be…
Igor V. SokolovJun 5, 2009
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On the buoyancy force and the metacentre
We address the point of application A of the buoyancy force (also known as the Archimedes force) by using two different definitions of the point of application of a force, derived one from the…
Jacques Mégel, Janis KliavaJun 5, 2009
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Quantum Mechanical Disclosure of the Classical Adiabatic Constancy of PVg for an Ideal Gas, and for a Photon Gas
Previously, we established a connection between the macroscopic classical laws of gases and the quantum mechanical description of molecules of an ideal gas (T. Yarman et al. arXiv:0805.4494). In such…
Metin Arik, Tolga Yarman, Alexander L. KholmetskiiJun 5, 2009
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Comment on "Dynamics of a Charged Particle"
The equation derived by F.Rohrlich (Phys.Rev.E 77, 046609 (2008)) reproduces Eq.(76.3) from the Landau and Lifshitz book (The Classical Theory of Fields). The new validity condition for this equation…
Igor V. SokolovJun 4, 2009
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Detection and imaging in a random medium: A matrix method to overcome multiple scattering and aberration
We present an imaging technique particularly suited to the detection of a target embedded in a strongly scattering medium. Classical imaging techniques based on the Born approximation fail in this…
Alexandre Aubry, Arnaud DerodeJun 2, 2009
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Some alternatives for calculating multipole expansions of the electromagnetic radiation field
We discuss the multipolar expansion of the electromagnetic field with an emphasis on the radiated field. We investigate if the employment of Jefimenko's equations brings a new insight into the…
C. Vrejoiu, R. ZusJun 2, 2009
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Electromagnetic radiation in a time-varying background medium
Analytical solutions are presented for the electromagnetic radiation by an arbitrary pulsed source into a homogeneous time-varying background medium. In the constant-impedance case an explicit…
Neil V. BudkoJun 2, 2009
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Ultra directive antenna via transformation optics
Spatial coordinate transformation is used as a reliable tool to control electromagnetic fields. In this paper, we derive the permeability and permittivity tensors of a metamaterial able to transform…
Paul-Henri Tichit, Shah Nawaz Burokur, Andre de LustracJun 2, 2009
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The south-pointing chariot on a surface
We examine closely the motion of the south-pointing chariot on a surface by taking into account the fact that both wheels have to roll without slipping. We firstly develop a procedure of successive…
Bernard LinetJun 1, 2009
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The impact force in the ballistic oscillator
We determine the impact force generated by the projectile penetrating the body of the harmonic oscillator. We discuss the ballistic effect in connection with the Compton effect. Key words:…
Miroslav PardyJun 1, 2009
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Intonation and Compensation of Fretted String Instruments
In this paper we present mathematical and physical models to be used in the analysis of the problem of intonation of musical instruments such as guitars, mandolins and the like, i.e., we study how to…
Gabriele U. Varieschi, Christina M. GowerMay 31, 2009
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Flat spacetime in a capsule
We propose a parallel introduction to Galilean and Einsteinian relativity based on the causal structure and inertial motions. Galilean and Poincare transformations, as objects secondary to the…
Andrzej HerdegenMay 27, 2009
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Theoretical study of subwavelength imaging by acoustic metamaterial slabs
We investigate theoretically subwavelength imaging by acoustic metamaterial slabs immersed in the liquid matrix. A near-field subwavelength image formed by evanescent waves is achieved by a designed…
Ke Deng, Yiqun Ding, Zhaojian He et al.May 24, 2009
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Classical and Thermodynamic work fluctuations
We have studied the nature of classical work (Wc) and thermodynamic work (W) fluctuations in systems driven out of equilibrium both in transient and time periodic steady state. As the…
Mamata Sahoo, A. M JayannavarMay 24, 2009
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Graded negative index lens with designable focal length by phononic crystal
We realize a flat lens with graded negative refractive index by a two-dimensional phononic crystal. The index-grade is achieved by gradual modification of the filling fraction along the transverse…
Ke Deng, Yiqun Ding, Zhaojian He et al.May 24, 2009
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Toolpaths Programming in an Intelligent Step-NC Manufacturing Context
The current language for CNC programming is G-code which dates from the beginning of the eighties with the norm ISO 6983. With the new technologies, G-code becomes obsolete. It presents drawbacks…
Raphael Laguionie, Matthieu Rauch, Jean-Yves HascoëtMay 19, 2009
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Dispersive Cylindrical Cloaks under Non-Monochromatic Illumination
Transformation-based cylindrical cloaks and concentrators are illuminated with non-monochromatic waves and unusual effects are observed with interesting potential applications. The transient…
Christos Argyropoulos, Efthymios Kallos, Yang HaoMay 18, 2009
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