Ergontropic Dynamics -- Contribution for an Extended Particle DynamicsA vast concourse of events and phenomena occur in nature that may be interrelated by a entropy-maximization technique that provides a comprehensible explanation of a range of physical problems,…Mario J Pinheiro·May 13, 2021SaveLearn
A Curious Use of Extra Dimension in Classical MechanicsExtra dimensions can be utilized to simplify problems in classical mechanics, offering new insights. Here we show a simple example of how the motion of a test particle under the influence of an…Trung Phan, Anh Doan·May 12, 2021SaveLearn
On the Electromagnetic Energies and ForcesThe problem of the `infinite energy' of a point charge is well known in connection with the Lorentz--Abraham--Dirac equation and, more significantly, in quantum electrodynamics. Though it is not…Tamás Matolcsi·May 12, 2021SaveLearn
Broken Pencils and Moving Rulers: After an unpublished book by Mitchell FeigenbaumMitchell Feigenbaum discovered an intriguing property of viewing images through cylindrical mirrors or looking into water. Because the eye is a lens with an opening of about 5mm, many different rays…Jean-Pierre Eckmann·May 12, 2021SaveLearn
Constraints on the Dimensionality of SpaceComplex structures can only form in a universe that allows for bound states. While this is clearly observed in three-dimensions, added degrees of freedom in a higher-dimensional space preclude the…C. A. Petway, R. D. Orlando, A. M. McNamara et al.·May 11, 2021SaveLearn
Thermodynamic identities and thermodynamic consistency of Equation of StatesWe present a systematic approach to construct complete equations of state (EOSs), or to ensure thermodynamic consistency of complete and incomplete forms of EOSs using a minimal and sufficient set of…Saad Benjelloun·May 11, 2021SaveLearn
On the Electrostatic Interaction between Point Charges due to Dielectrical ShieldingHow will the electrostatic interaction between two point charges change if they are shielded from the other by a dielectrical slab? While the physical setting of this electromagnetic problem is…Long T. Nguyen, Kim Tuan Do, Duy V. Nguyen et al.·May 11, 2021SaveLearn
Deep learning in physics: a study of dielectric quasi-cubic particles in a uniform electric fieldSolving physics problems for which we know the equations, boundary conditions and symmetries can be done by deep learning. The constraints can be either imposed as terms in a loss function or used to…Zhe Wang, Claude Guet·May 11, 2021SaveLearn
Time-dependent forces between a swift electron and a small nanoparticle within the dipole approximationIn this paper we calculate the time-dependent forces between a swift electron traveling at constant velocity and a metallic nanoparticle made of either aluminum or gold. We consider that the…J. Castrejón-Figueroa, J. Á. Castellanos-Reyes, C. Maciel-Escudero et al.·May 11, 2021SaveLearn
Development of a Prediction Model for Indoor Rolling NoiseThis work presents a prediction model for rolling noise in multi-story buildings, such as that generated by a rolling delivery trolley. Until now, mechanical excitation in multi-story buildings has…M. Edwards, F. Chevillotte, F. -X. Bécot et al.·May 10, 2021SaveLearn
Elementary Methods for Infinite Resistive Networks with Complex TopologiesFinding the equivalent resistance of an infinite ladder circuit is a classical problem in physics. We expand this well-known challenge to new classes of network topologies, in which the unit cells…Tung X. Tran, Linh K. Nguyen, Quan M. Nguyen et al.·May 8, 2021SaveLearn
Extension of the single-nonlinear-mode theory by linear attachments and application to exciter-structure interactionUnder certain conditions, the dynamics of a nonlinear mechanical system can be represented by a single nonlinear modal oscillator. The properties of the modal oscillator can be determined by…Malte Krack·May 6, 2021SaveLearn
Absorption and scattering by a temporally switched lossy layer: Going beyond the Rozanov boundIn this paper we study the electromagnetic scattering, absorption, and performance bounds for short time modulated pulses that impinge on a time-varying lossy layer that is sandwiched between vacuum…Chen Firestein, Amir Shlivinski, Yakir Hadad·May 4, 2021SaveLearn
Radiation of Charge Moving along Face of Inverted PrismCherenkov radiation (CR) generated by a charge moving along one of the faces of a dielectric prism is analyzed. Unlike our previous papers, here we suppose that the charge moves from the the prism…Andrey V. Tyukhtin, Sergey N. Galyamin, Viktor V. Vorobev·May 3, 2021SaveLearn
Using Green functions to solve potentials in electrostaticsIn this paper, we summarize the technique of using Green functions to solve electrostatic problems. We start by deriving the electric potential in terms of a Green function and a charge distribution.…Y. F. Alam, A. Behne, W. S. Chisholm et al.·May 2, 2021SaveLearn
Cherenkov Radiation from a Hollow Conical Targets: Off-Axis Charge MotionCherenkov radiation (CR) generated by a charge moving through a hollow conical target made of dielectric material is analyzed. We consider two cases: the charge moves from the base of the cone to its…Andrey V. Tyukhtin, Sergey N. Galyamin, Viktor V. Vorobev·May 2, 2021SaveLearn
Selective mode conversion and rainbow trapping via graded elastic waveguidesWe experimentally achieve wave mode conversion and rainbow trapping in an elastic waveguide loaded with an array of resonators. Rainbow trapping is a phenomenon that induces wave confinement as a…Jacopo M. De Ponti, Luca Iorio, Emanuele Riva et al.·Apr 29, 2021SaveLearn
Motor strategies and adiabatic invariants: The case of rhythmic motion in parabolic flightsThe role of gravity in human motor control is at the same time obvious and difficult to isolate. It can be assessed by performing experiments in variable gravity. We propose that adiabatic invariant…N. Boulanger, F. Buisseret, V. Dehouck et al.·Apr 29, 2021SaveLearn
Analytical solutions for the Timoshenko beam theory with Free-Free boundary conditionsTimoshenko's theory for bending vibrations of a beam has been extensively studied since its development nearly one hundred years ago. Unfortunately there are not many analytical results. The…Rafael A. Méndez-Sánchez, Antonio A. Fernández-Marín·Apr 29, 2021SaveLearn
Global Symmetries of the Kepler ProblemThe global symmetry transformations generated by Runge-Lenz vector of twodimensional Kepler problem are explicitly described. They are given in terms of SU(2) left group multiplication with group…Joanna Gonera, Piotr Kosinski, Patryk Michel·Apr 28, 2021SaveLearn
Transmission of electromagnetic waves through nonlinear optical layersThe excitation of soliton states in optical layers exhibiting Kerr nonlinearities is theoretically investigated. The optical transmission coefficient is obtained as a function of the nonlinearity…L. M. Hincapie-Zuluaga, J. D. Mazo-Vásquez, C. A. Betancur-Silvera et al.·Apr 27, 2021SaveLearn
On the Laws of Thermodynamics in Classical Non-Inertial FramesThis work consists in the theorical development on the analysis of the Thermodynamic Laws and thermodynamic systems in relative motion, according to the laws of Classical Mechanics. The difference of…Wendel Macedo Mendes, Bruno Poti e Silva·Apr 27, 2021SaveLearn
Vertical Bicycle Model of Vehicle with Dry FrictionThe motion of a vertically positioned bicycle is considered when a horizontal control force, which maybe both internal and external in relation to the bicycle, is applied to its pedal. Tangential…G. M. Rozenblat, V. B. Yashin·Apr 27, 2021SaveLearn
The Differential Equations of Gravity-free Double Pendulum: Lauricella Hypergeometric Solutions and Their InversionThis paper solves in closed form the system of ODEs ruling the 2D motion of a gravity free double pendulum (GFDP), not subjected to any force. In such a way its movement is governed by the initial…Alessio Bocci, Giovanni Mingari Scarpello·Apr 26, 2021SaveLearn
Rotorcraft RPM on MarsThe Ingenuity helicopter test flights on Mars in April 2021 marked the first time a powered aircraft has flown on another world. Students who have access to model helicopters and drones may wonder,…Philip Blanco·Apr 23, 2021SaveLearn