Classical Physics Papers of the Week

Three homogenization models are formulated for a finite chain whose total length is much larger than the unit-cell length.

Starting from Preston's law of material removal, we derive a first-principles explanation.

Here, we demonstrate spin-induced lateral acoustic forces on chiral and achiral particles coupled to a substrate.

The approach enables directivity patterns to be summarized in an interpretable way and compared consistently across frequency bands, even when the radiation is not well described by a single dominant direction.

We apply an integrated energy-balance workflow to five configurations tested by one rider on a road section.

Here, we use optical elastography, a high spatiotemporal resolution technique, to track transverse wave propagation in a soft incompressible cylinder under different tension levels and obtain the corresponding phase velocity dispersion curves.

The classic analytical dynamics framework is used throughout, with all developments formulated in terms of arbitrary symplectic coordinates (i.e., canonical coordinates) or functions thereof.

We present a numerical and conceptual overview of classical scattering under a Lennard-Jones potential.

The classification of the motion of a heavy symmetric top when conserved angular momenta are different is studied by considering modern method and Routh's geometrical method.

We develop the asymptotic high-frequency expansions of dynamic tortuosity and dynamic compressibility beyond the leading boundary-layer terms.

This paper presents, to the author's knowledge, the first analytical model, restricted to elliptical meta-atoms on a uniform lattice.

This paper investigates the electrodynamics of a specially developed eddy-current-based proximity sensor suitable for integration into confined spaces.

At larger amplitudes the whirl becomes modulated, reverses its direction, and becomes chaotic. Three models of this motion are in common use: the geometrically exact string equations; a two-mode model -- the Kirchhoff-Carrier equation with one transverse mode in each plane; and the averaged equations for the slow amplitudes of those two modes.

Linear and nonlinear mechanical structures with closely spaced modes and non-classical (nonproportional) damping distribution are susceptible to modal interactions with energy exchanges between modes. In this work we analyze these interactions in a two-degree-of-freedom (2 DoF) coupled oscillator subject to impulse excitation, utilizing action-angle variables and the method of multiple scales.