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Classical Physics papers — page 114

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Analytic solution to the motion of the mass-spring oscillator subjected to external force
The non-evanescent vibration, evanescent vibration and forced vibration of an oscillator attached to the massless spring are always discussed in general mechanics courses. In this article, we focus…
Youtian ZhangMay 13, 2015
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Double pendulum model for tennis stroke including a collision process
By means of adding a collision process between the ball and racket in double pendulum model, we analyzed the tennis stroke. It is possible that the speed of the rebound ball does not simply depend on…
Sun-Hyun YounMay 8, 2015
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Poynting flux in the neighbourhood of a point charge in arbitrary motion and the radiative power losses
We examine the electromagnetic fields in the neighbourhood of a "point charge" in arbitrary motion and thereby determine the Poynting flux across a spherical surface of vanishingly small…
Ashok K. SingalMay 7, 2015
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Poisson-Nernst-Planck equations in a ball
The Poisson Nernst-Planck equations for charge concentration and electric potential in a ball is a model of electro-diffusion of ions in the head of a neuronal dendritic spine. We study the…
Z. Schuss J. Cartailler, D. HolcmanMay 7, 2015
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Active acoustic metamaterials reconfigurable in real-time
A major limitation of current acoustic metamaterials is that their acoustic properties are either locked into place once fabricated or only modestly tunable, tying them to the particular application…
Bogdan-Ioan Popa, Durvesh Shinde, Adam Konneker et al.May 3, 2015
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The Karlqvist approximation revisited
The Karlqvist approximation signaling the historical beginning of magnetic recording head theory is reviewed and compared to various approaches progressing from Green, Fourier, Conformal mapping that…
C. TannousApr 28, 2015
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Elementary derivation of the expressions of momentum and energy in special relativity
The expressions of momentum and energy of a particle in special relativity are often derived in a quite unconvincing manner in elementary text, by resorting either to electrodynamic or quantum…
Luca PelitiApr 27, 2015
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Classical-physics applications for Finsler b space
The classical propagation of certain Lorentz-violating fermions is known to be governed by geodesics of a four-dimensional pseudo-Finsler b space parametrized by a prescribed background covector…
Joshua Foster, Ralf LehnertApr 23, 2015
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Symmetric energy-momentum tensor: The Abraham form and the explicitly covariant formula
We compare the known in literature, explicitly covariant 4-dimensional formula for the symmetric energy-momentum tensor of electromagnetic field in a medium and the energy-momentum tensor derived by…
V. V. Nesterenko, A. V. NesterenkoApr 21, 2015
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The Pauli-Lubanski Vector, Complex Electrodynamics, and Photon Helicity
We critically analyze the concept of photon helicity and its connection with the Pauli-Lubanski vector from the viewpoint of the complex electromagnetic field, F=E+iH, sometimes attributed to Riemann…
Sergey I. Kryuchkov, Nathan A. Lanfear, Sergei K. SuslovApr 16, 2015
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Analysis on the Foucault pendulum by De Alembert Principle and Numerical Simulation
In this paper, we handle the problem of the motion of the Foucault pendulum. We explore a new method induced from the De Alembert Principle giving the motional equations without small-amplitude…
Zhiwu ZhengApr 15, 2015
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Microinertia and internal variables
The origin of microinertia of micromorphic theories is investigated from the point of view of non-equilibrium thermodynamics. In the framework of dual internal variables microinertia stems from a…
A. Berezovski, P. VánApr 14, 2015
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Can classical physics agree with quantum physics on quantum phenomena?
Classical physics fails where quantum physics prevails. This common understanding applies to quantum phenomena that are acknowledged to be beyond the reach of classical physics. Here, we make an…
Michele MarroccoApr 13, 2015
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Anomalous refraction based on acoustic metasurfaces with membranes
The investigation of metasurface, which is of great current interest, has opened up new degrees of freedom to research metamaterials. In this paper, we propose an ultrathin acoustic metasurface…
Shilong Zhai, Changlin Ding, Huaijun Chen et al.Apr 9, 2015
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Nonlinear normal modes in electrodynamic systems: A nonperturbative approach
We consider electromagnetic nonlinear normal modes in cylindrical cavity resonators filled with a nonlinear nondispersive medium. The key feature of the analysis is that exact analytical solutions of…
A. V. Kudrin, O. A. Kudrina, E. Yu. PetrovApr 6, 2015
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Note on star-triangle equivalence in conducting networks
By using the discrete Poisson equations the star-triangle (external) equivalence in conducting networks is considered and the Kennelly famous transformation formulae [Kennelly A E 1899 Electrical…
E. Paal, M. UmblejaApr 6, 2015
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Active Invisibility Cloaks in One Dimension
We outline a general method of constructing finite-range cloaking potentials which render a given finite-range real or complex potential v(x) unidirectionally reflectionless or invisible at a…
Ali MostafazadehApr 5, 2015
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Local resonance and Bragg bandgaps in sandwich beams containing periodically inserted resonators
We study the low frequency wave propagation behavior of sandwich beams containing periodically embedded internal resonators. A closed form expression for the propagation constant is obtained using a…
Bhisham Sharma, Chin-Teh SunMar 31, 2015
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On the gradient of the Green tensor in two-dimensional elastodynamic problems, and related integrals: Distributional approach and regularization, with application to nonuniformly moving sources
The two-dimensional elastodynamic Green tensor is the primary building block of solutions of linear elasticity problems dealing with nonuniformly moving rectilinear line sources, such as…
Yves-Patrick Pellegrini, Markus LazarMar 30, 2015
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Solutions of Laplace's equation with simple boundary conditions, and their applications for capacitors with multiple symmetries
We find solutions of Laplace's equation with specific boundary conditions (in which such solutions take either the value zero or unity in each surface) using a generic curvilinear system of…
Mayckol Morales, Rodolfo A. Diaz, William J. HerreraMar 29, 2015
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Continuum Electrodynamics of a Piecewise-Homogeneous Linear Medium
The energy--momentum tensor and the tensor continuity equation serve as the conservation laws of energy, linear momentum, and angular momentum for a continuous flow. Previously, we derived equations…
Michael E. CrenshawMar 24, 2015
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Various Interpretations of the Stored and the Radiated Energy Density
Three contradictory but state-of-the-art concepts for defining and evaluating stored electromagnetic energy are treated in this communication, and are collated with the widely accepted definition of…
Miloslav Capek, Lukas JelinekMar 23, 2015
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The Liouville theorem as a problem of common eigenfunctions
It is shown that, by appropriately defining the eigenfunctions of a function defined on the extended phase space, the Liouville theorem on solutions of the Hamilton--Jacobi equation can be formulated…
G. F. Torres del CastilloMar 23, 2015
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Spatially Dispersive Inhomogeneous Electromagnetic Media with Periodic Structure
Spatially dispersive (also known as non-local) electromagnetic media are considered where the parameters defining the permittivity relation vary periodically. Maxwell's equations give rise to a…
Jonathan Gratus, Matthew McCormackMar 20, 2015
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Critical thickness of an optimum extended surface characterized by uniform heat transfer coefficient
We consider the heat transfer problem associated with a periodic array of extended surfaces (fins) subjected to convection heat transfer with a uniform heat transfer coefficient. Our analysis differs…
Theodoros Leontiou, Marios M. FyrillasMar 16, 2015
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