A 4-vector formalism for classical mechanicsWe present a matrix formalism, inspired by the Minkowski four-vectors of special relativity, useful to solve classical physics problems related to both mechanics and thermodynamics. The formalism…Julio Güémez, Manuel Fiolhais·Feb 8, 2014SaveLearn
Explicit Mapping of Acoustic Regimes For Wind InstrumentsThis paper proposes a methodology to map the various acoustic regimes of wind instruments. The maps can be generated in a multi-dimensional space consisting of design, control parameters, and initial…Samy Missoum, Christophe Vergez, Jean-Baptiste Doc·Feb 7, 2014SaveLearn
Synchronization of two self-excited double pendulaWe consider the synchronization of two self-excited double pendula. We show that such pendula hanging on the same beam can have four different synchronous configurations. Our approximate analytical…Piotr Koluda, Przemyslaw Perlikowski, Krzysztof Czolczynski et al.·Feb 6, 2014SaveLearn
Reduced-order Abraham-Lorentz-Dirac equation and the consistency of classical electromagnetismIt is widely believed that classical electromagnetism is either unphysical or inconsistent, owing to pathological behavior when self-force and radiation reaction are non-negligible. We argue that…Andrew M. Steane·Feb 5, 2014SaveLearn
Generation of a tunable environment for electrical oscillator systemsMany physical, chemical and biological systems can be modeled by means of random-frequency harmonic oscillator systems. Even though the noise-free evolution of harmonic oscillator systems can be…R. de J. León-Montiel, J. Svozilík, Juan P. Torres·Feb 5, 2014SaveLearn
Using simple shape three-dimensional inclusions to enhance porous layer absorptionThe absorption properties of a metaporous material made of non-resonant simple shape three-dimensional inclusions (cube, cylinder, sphere, cone and torus) embedded in a rigidly backed rigid frame…Jean-Philippe Groby, Benoit Nennig, Clément Lagarrigue et al.·Feb 5, 2014SaveLearn
Reference frames in classical and relativistic physicsFormal definition of the reference frame is given. This definition is valid for nonrelativistic and relativistic cases. Proposed definition allows using wide classes of reference frames without…Oleg Igorevich Drivotin·Feb 2, 2014SaveLearn
A Paradox Related to Mechanical and Electrical Energy ConversionA model is constructed and a paradox concerning the proper direction and magnitude of the external force to maintain the equilibrium state of a parallel plate capacitor system is raised. By a…Songyan Li·Feb 1, 2014SaveLearn
Stray capacitances in the watt balance operation: electrostatic forcesIn a watt balance, stray capacitances exist between the coil and the magnet. Since the electric current flowing in the coil originates a difference between the coil and magnet electric-potentials,…Danilo Quagliotti, Giovanni Mana·Feb 1, 2014SaveLearn
Determination of the Planck constant using a watt balance with a superconducting magnet system at the National Institute of Standards and TechnologyFor the past two years, measurements have been performed with a watt balance at the National Institute of Standards and Technology (NIST) to determine the Planck constant. A detailed analysis of…Stephan Schlamminger, Darine Haddad, Frank Seifert et al.·Jan 31, 2014SaveLearn
Omega Transmission Lines with Applications to Effective Medium Models of MetamaterialsIn this paper we introduce the concept of transmission lines with inherent bi-anisotropy and establish an analogy between these lines and volumetric bi-anisotropic materials. In particular, we find…Joni Vehmas, Silvio Hrabar, Sergei Tretyakov·Jan 30, 2014SaveLearn
Transformation elastodynamics and cloaking for flexural wavesThe paper addresses an important issue of cloaking transformations for fourth-order partial differential equations representing flexural waves in thin elastic plates. It is shown that, in contrast…D. J. Colquitt, M. Brun, M. Gei et al.·Jan 28, 2014SaveLearn
Yet another derivation of special relativity transformations without the second postulateThe most general transformation connecting inertial frames is derived from rather general and simple assumptions, without the postulate of constancy of the speed of light in vacuo.Josep Llosa·Jan 25, 2014SaveLearn
A suspended rope wrapped around a cylinderThe problem of a suspended rope wrapped around a fixed cylinder is studied. If the suspension force is larger than a certain threshold (which is larger than the weight of the rope), the rope would…Mohammad Khorrami, Amir Aghamohammadi·Jan 25, 2014SaveLearn
Construction of Lagrangian and Hamiltonian Structures starting from one Constant of MotionThe problem of the construction of Lagrangian and Hamiltonian structures starting from two first order equations of motion is presented. This new approach requires the knowledge of one (time…Sergio A. Hojman·Jan 23, 2014SaveLearn
Experimental stress-strain analysis of tapered silica optical fibers with nanofiber waistWe experimentally determine tensile force-elongation diagrams of tapered optical fibers with a nanofiber waist. The tapered optical fibers are produced from standard silica optical fibers using a…Sigrid Holleis, Thomas Hoinkes, Christian Wuttke et al.·Jan 23, 2014SaveLearn
Growth and Shape of a Chain FountainIf a long chain is held in a pot elevated a distance h1 above the floor, and the end of the chain is then dragged over the rim of the pot and released, the chain flows under gravity down into a pile…John S. Biggins·Jan 22, 2014SaveLearn
Effect of the fluctuations around mean field for N-body systems with long range interactionsWe study the effect of Chandrasekhar and Holstmark's distribution of field fluctuations on the dynamics of N-body systems interacting via Coulomb or Newton gravitational force. We develop an…Y. Chaffi, R. Casta, L. Brenig·Jan 19, 2014SaveLearn
Dynamical decoupling and dynamical isolation in temporally modulated coupled pendulumsWe theoretically study the dynamics of a pair of coupled pendulums subject to a periodic temporal modulation of their oscillation frequency. Inspired from analogous developments in quantum mechanics,…Grazia Salerno, Iacopo Carusotto·Jan 16, 2014SaveLearn
From infinitesimal to full contact between rough surfaces: evolution of the contact areaWe carry out a statistically meaningful study on self-affine rough surfaces in elastic frictionless non-adhesive contact. We study the evolution of the true contact area under increasing squeezing…Vladislav A. Yastrebov, Guillaume Anciaux, Jean-François Molinari·Jan 16, 2014SaveLearn
Generation of two-dimensional water waves by moving bottom disturbancesWe investigate the potential and limitations of the wave generation by disturbances moving at the bottom. More precisely, we assume that the wavemaker is composed of an underwater object of a given…Hayk Nersisyan, Denys Dutykh, Enrique Zuazua·Jan 13, 2014SaveLearn
The radiation problem from a vertical short dipole antenna above flat and lossy ground. Novel formulation in the spectral domain with closed form analytical solution in the high frequency regimeIn this paper we consider the problem of radiation from a vertical short Hertzian dipole above flat lossy ground, which represents the well known in the literature Sommerfeld radiation problem. The…Ch. Christakis, K. Ioannidi, S. Sautbekov et al.·Jan 8, 2014SaveLearn
On nonlinear viscoelastic deformations - a reappraisal of Fung's quasilinear viscoelastic modelThis article offers a reappraisal of Fung's method for quasilinear viscoelasticity. It is shown that a number of negative features exhibited in other works, commonly attributed to the Fung…Riccardo De Pascalis, I. David Abrahams, William J. Parnell·Jan 8, 2014SaveLearn
Unveiling Magnetic Dipole Radiation in Phase-Reversal Leaky-Wave AntennasThe radiation principle of travelling-wave type phase-reversal antennas is explained in details, unveiling the presence of magnetic-dipole radiation in addition to well-known electric dipole…Shulabh Gupta, Li Jun Jiang, Christophe Caloz·Jan 1, 2014SaveLearn
Higher order closed-form model for isotropic hyperelastic spherical shell (3D solid)Higher order closed-form formulation for Neo-Hookean shell is presented. New solution for natural frequency of free vibration of a hemisphere is derived.Eli Hanukah·Dec 31, 2013SaveLearn