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Classical Physics papers — page 41

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An Energy Conserving Mechanism for Temporal Metasurfaces
Changing the microstructure properties of a space-time metamaterial while a wave is propagating through it, in general requires addition or removal of energy, which can be of exponential form…
Kshiteej J. Deshmukh, Graeme W. MiltonMay 17, 2022
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High-Quality Resonances in Quasi-Periodic Clusters of Scatterers for Flexural Waves
Multiple scattering theory is applied to the study of clusters of point-like scatterers attached to a thin elastic plate and arranged in quasi-periodic distributions. Two type of structures are…
Marc Martí-Sabaté, Sébastien Guenneau, Dani TorrentMay 16, 2022
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Experimental analysis and transient numerical simulation of a large diameter pulsating heat pipe in microgravity conditions
A multi-parametric transient numerical simulation of the start-up of a large diameter Pulsating Heat Pipe (PHP) specially designed for future experiments on the International Space Station (ISS) are…
Mauro Abela, Mauro Mameli, Vadim Nikolayev et al.May 9, 2022
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Overlooked Work and Heat of Intervention and the Fate of Information Principles of Szilard and Landauer
We show that any external intervention (insertion or removal of a partition) that destroys the equilibrium or brings it in a system always requires work and heat to ensure that the first law is…
P. D. GujratiMay 5, 2022
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Earth satellite dynamics by Picard iterations
The main effects of the Earth's oblateness on the motion of artificial satellites are usually derived from the variation of parameters equations of an average representation of the oblateness…
Martin LaraMay 5, 2022
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Buckling vs unilateral constraint for a multistable metamaterial element
A structural element is designed and investigated, forming the basis for the development of an elastic multistable metamaterial. The leitmotif of the structural design is the implementation of a…
Nikolin Hima, Davide Bigoni, Francesco Dal CorsoMay 4, 2022
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On the problem of projectile motion in a medium with quadratic resistance
A classic problem of the motion of a projectile thrown at an angle to the horizon in a medium with a quadratic resistance law is studied. An approximate analytical solution of the equations of…
Peter ChudinovMay 3, 2022
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The pedagogical value of the four-dimensional picture III: Solutions to Maxwell's equations
We outline a regular way for solving Maxwell's equations. We take, as the starting point, the notion of vector potentials. The rationale for introducing this notion in electrodynamics is that the…
Andrew E Chubykalo, Augusto Espinoza, B P KosyakovMay 3, 2022
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The pedagogical value of the four-dimensional picture I: Relativistic mechanics of point particles
We outline two subjects of relativistic mechanics: (i) the set of allowable world lines, and (ii) the origin of the relativistic law of dynamics governing point particles. We show that: (i) allowable…
B. P. KosyakovMay 2, 2022
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The pedagogical value of the four-dimensional picture II: Another way of looking at the electromagnetic field
The concept of electromagnetic field can be neatly formulated by recognizing that the simplest form of the four-force is indeed feasible. We show that Maxwell's equations almost entirely stem…
B. P. KosyakovMay 2, 2022
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How does a heavy symmetric top rise?
The rise of the top is studied by considering slipping friction. For this case, equations of motion are obtained by using Euler equations for a heavy symmetric top with a hemispherical peg. Different…
Vedat TanriverdiApr 27, 2022
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Relaxation and dynamics of high-stress pre-displaced string resonators
Pre-displaced micromechanical resonators made from high-stress material give rise to new rich static and dynamic behavior. Here, an analytical model is presented to describe the mechanics of such…
Xiong Yao, David Hoch, Menno PootApr 26, 2022
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Topology, nonlocality and duality in classical electrodynamics
We have recently (Heras et al. in Eur. Phys. J. Plus 136:847, 2021) argued that classical electrodynamics can predict nonlocal effects by showing an example of a topological and nonlocal…
José A. Heras, Ricardo HerasApr 26, 2022
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A note on the relativistic temperature
We show that the largely debated Planck-Einstein and Ott-Arzelies relativistic transformations of temperature do not satisfy the closure group property that two successive temperature transformations…
José A. Heras, María G. OsornoApr 26, 2022
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The sound of the udu
The udu is a traditional Nigerian percussion instrument that can be thought of as a Helmholtz resonator with two apertures. We use a simple two-particle mechanical analogue to study the behaviour of…
Leonardo Pereira Vieira, Carlos Eduardo AguiarApr 25, 2022
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Time symmetric electrodynamics, electric charge conservation, and the Lorenz gauge
We reveal a new way in which the Lorenz gauge condition is related to the electric charge conservation, in a universe where electrically charged point particles are created and annihilated. We derive…
Calin GaleriuApr 22, 2022
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Classical harmonic three-body system: An experimental electronic realization
The classical three-body harmonic system in Rd (d>1) with finite rest lengths and zero total angular momentum L=0 is considered. This model describes the dynamics of the L=0…
A. M. Escobar-Ruiz, M. A. Quiroz-Juarez, J. L. Del Rio-Correa et al.Apr 22, 2022
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Symmetric and antisymmetric constitutive tensors for bi-isotropic and bi-anisotropic media
The Maxwell equations and the constitutive relations describe the classical propagation of electromagnetic waves in continuous matter. Here, we investigate the effects stemming from extended…
Pedro D. S. Silva, Rodolfo Casana, Manoel M. FerreiraApr 22, 2022
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Backflow in relativistic wave equations
We show that, contrary to the statements made by many authors, the backflow is not a nonclassical effect. The backflow is a characteristic feature of solutions of the wave equations: quantum and…
Iwo Bialynicki-Birula, Zofia Bialynicka-Birula, Szymon AugustynowiczApr 21, 2022
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Mathematics of Floating 3D Printed Objects
We explore the stability of floating objects through mathematical modeling and experimentation. Our models are based on standard ideas of center of gravity, center of buoyancy, and Archimedes'…
Daniel M. Anderson, Brandon G. Barreto-Rosa, Joshua D. Calvano et al.Apr 18, 2022
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3-D Acoustic Trapping With Standing Waves
In this work, we will describe an experimental setup for a standing--wave ultrasound trap for air microbubbles in oil. We develop a model for the finite acoustic beam using the angular spectrum…
Matheus Azevedo Silva Pessôa, Antonio Alvaro Ranha NevesApr 17, 2022
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Experimental Verification of the Acoustic Geometric Phase
The optical geometric phase encoded by the in-plane spatial orientation of microstructures has promoted the rapid development of numerous new-type optical meta-devices. However, pushing the concept…
Bingyi Liu, Zhiling Zhou, Yongtian Wang et al.Apr 16, 2022
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How Fast are Domino Waves?
The paper is concerned with the problem of toppling propagation velocity in elastic, domino-like mechanical systems. We build on the work of Efthimiou and Johnson, who developed the theory of…
Daniel Ding, Clement Lau, Jorrit Westerhof et al.Apr 14, 2022
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Hidden symmetries in acoustic wave systems
Mirror symmetry of a wave system imposes corresponding even or odd parity on its eigenmodes. For a discrete system, eigenmode parity on a specific subset of sites may also originate from so-called…
Malte Röntgen, Christian V. Morfonios, Peter Schmelcher et al.Apr 11, 2022
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Advanced self-similar solutions of regular and irregular diffusion equations
We study the diffusion equation with an appropriate change of variables. This equation is in general a partial differential equation (PDE). With the self-similar and related Ansatätze we transform…
Imre Ferenc Barna, László MátyásApr 11, 2022
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