Bending of Spaghetti Beams and Columns Exposed to Hot Steam Reveals Several Physical Properties of the SpaghettiIn this paper, we show that bending of spaghetti beams and columns exposed to hot steam reveals the time evolution of young modulus, the diffusion coefficient of water molecules penetrating the…Fathan Akbar, Mikrajuddin Abdullah·Jul 8, 2020SaveLearn
On the question of the electromagnetic momentum of a charged bodyThe incorporation of a relativistic momentum of a nonelectromagnetic nature into macroscopic problems of electrodynamics obviates the lack of correspondence between the electromagnetic mass and the…V. B. Morozov·Jul 5, 2020SaveLearn
Synthesis of lossless electric circuits based on prescribed Jordan formsWe advance here an algorithm of the synthesis of lossless electric circuits such that their evolution matrices have the prescribed Jordan canonical forms subject to natural constraints. Every…Alexander Figotin·Jul 4, 2020SaveLearn
Effective resistances of two dimensional resistor networksWe investigate the behavior of two dimensional resistor networks, with finite sizes and different kinds (rectangular, hexagonal, and triangular) of lattice geometry. We construct the network by…Rajat Chandra Mishra, Himadri Barman·Jul 3, 2020SaveLearn
IPO: Iterative Physical Optics Image ApproximationAn improved Iterative Physical Optics (IPO) image approximation method has been presented to dramatically increase the accuracy of the approximation and extend its applicability to PEC surfaces with…Shaolin Liao, Lu Ou·Jul 3, 2020SaveLearn
CPA-Lasing in Thin-Elastic Plates via Exceptional PointsWe present here how a coherent perfect absorber-laser (CPAL) enabled by parity-time (PT)-symmetry breaking may be exploited to build monochromatic amplifying devices for flexural waves.…M. Farhat, P. Y. Chen, S. Guenneau et al.·Jul 3, 2020SaveLearn
Acoustic Bandgaps of Phononic Penrose and QuasicrystalsUsing 3D printing we manufactured two rodlike phononic crystals. Viewed from the top, one is a Penrose tile and the second is a quasicrystal. We explored the acoustic properties and band gaps for…Bryan Eastwood, Edward A. Rietman·Jul 1, 2020SaveLearn
An explicit representation for the axisymmetric solutions of the free Maxwell equationsGaray-Avendaño \& Zamboni-Rached (2014) defined two classes of axisymmetric solutions of the free Maxwell equations. We prove that the linear combinations of these two classes of solutions cover all…Mayeul Arminjon·Jul 1, 2020SaveLearn
Validity of Image Theorems under Spherical GeometryThis paper deals with different image theorems, i.e., Love's equivalence principle, the induction equivalence principle and the physical optics equivalence principle, in the spherical geometry.…Shaolin Liao, Sasan Bakhtiari, Henry Soekmadji·Jul 1, 2020SaveLearn
An integrable family of torqued, damped, rigid rotorsExpositions of the Euler equations for the rotation of a rigid body often invoke the idea of a specially damped system whose energy dissipates while its angular momentum magnitude is conserved in the…J. A. Hanna·Jul 1, 2020SaveLearn
Physical pendulum model: Fractional differential equation and memory effectsA detailed analysis of three pendular motion models is presented. Inertial effects, self-oscillation, and memory, together with non-constant moment of inertia, hysteresis and negative damping are…L. N. Gonçalves, J. C. Fernandes, A. Ferraz et al.·Jun 28, 2020SaveLearn
Condición de Lorentz y ecuaciones de ondas electromagnéticas como propiedades emergentes del sistema de MaxwellThis article deals with the study of electromagnetic waves equations and the Lorentz condition, as emergent properties of Maxwell's system in the context of systems theory. To do this, the wave…Yudier Peña Pérez, Juan Bory Reyes·Jun 26, 2020SaveLearn
Robust Multiscale Identification of Apparent Elastic Properties at Mesoscale for Random Heterogeneous Materials with Multiscale Field MeasurementsThe aim of this work is to efficiently and robustly solve the statistical inverse problem related to the identification of the elastic properties at both macroscopic and mesoscopic scales of…Tianyu Zhang, Florent Pled, Christophe Desceliers·Jun 26, 2020SaveLearn
Harmonic Standing-Wave Excitations of Simply-Supported Thick-Walled Hollow Elastic Circular Cylinders: Exact 3D Linear Elastodynamic ResponseThe forced-vibration response of a simply-supported isotropic thick-walled hollow elastic circular cylinder subjected to two-dimensional harmonic standing-wave excitations on its curved surfaces is…Jamal Sakhr, Blaine A. Chronik·Jun 22, 2020SaveLearn
Comment on "Defining the electromagnetic potentials"In this comment it is argued that the argument for a unique determination of the electromagnetic potentials in classical electrodynamics in [1] is flawed. To the contrary the "gauge freedom"…Hendrik van Hees·Jun 20, 2020SaveLearn
A stress-driven local-nonlocal mixture model for Timoshenko nano-beamsA well-posed stress-driven mixture is proposed for Timoshenko nano-beams. The model is a convex combination of local and nonlocal phases and circumvents some problems of ill-posedness emerged in…Raffaele Barretta, Andrea Caporale, S. Ali Faghidian et al.·Jun 19, 2020SaveLearn
On the elliptic locus of a family of projectilesA little known property of free-fall motion is the elliptic locus of the maximum heights attained by coplanar projectiles launched from a single point in different directions with the same initial…Joseph A Rizcallah·Jun 17, 2020SaveLearn
Second gradient electromagnetostatics: electric point charge, electrostatic and magnetostatic dipolesIn this paper, we study the theory of second gradient electromagnetostatics as the static version of second gradient electrodynamics. The theory of second gradient electrodynamics is a linear…Markus Lazar, Jakob Leck·Jun 17, 2020SaveLearn
Variational Principle for Spontaneous Wiggler and Synchrotron RadiationWithin the framework of a Hilbert space theory, we develop a maximum-``power'' variational principle (MPVP) applicable to classical spontaneous electromagnetic radiation from relativistic…A. E. Charman, J. S. Wurtele, G. Penn·Jun 16, 2020SaveLearn
A discontinuity in the electromagnetic field of a uniformly accelerated chargeThe electric field of a uniformly accelerated charge shows a plane of discontinuity, where the field extending only on one side of the plane, terminates abruptly on the plane with a finite value.…Ashok K. Singal·Jun 13, 2020SaveLearn
On the analytic representation of Newtonian systemsWe show that the theory of self-adjoint differential equations can be used to provide a satisfactory solution of the inverse variational problem in classical mechanics. A Newtonian equation when…Benoy Talukdar, Supriya Chatterjee, Sekh Golam Ali·Jun 12, 2020SaveLearn
Experimental observation of real spectra in Parity-Time symmetric ZRC dimers with positive and negative frequenciesWe present in this work the first experimental observation of oscillations in Parity-Time symmetric ZRC dimers. The system obtained is of first order ordinary differential equation due to the use of…Stéphane Boris Tabeu, Fernande Fotsa-Ngaffo, Senghor Tagouegni et al.·Jun 11, 2020SaveLearn
Generalized golden mean and the efficiency of thermal machinesWe investigate generic heat engines and refrigerators operating between two heat reservoirs, for the condition when their efficiencies are equal to each other. It is shown that the corresponding…Ramandeep S. Johal·Jun 8, 2020SaveLearn
Helmholtz's theorem for two retarded fields and its application to Maxwell's equationsAn extension of the Helmholtz theorem is proved, which states that two retarded vector fields F1 and F2 satisfying appropriate initial and boundary conditions are uniquely…José A. Heras, Ricardo Heras·Jun 8, 2020SaveLearn
Physical limitations of phased array antennasIn this paper, the bounds on the Q-factor, a quantity inversely proportional to bandwidth, are derived and investigated for narrow-band phased array antennas. Arrays in free space and above a ground…Andrei Ludvig-Osipov, Jari-Matti Hannula, Patricia Naccachian et al.·Jun 4, 2020SaveLearn