Results 11 to 20 of about 39,293 (293)

Electromagnetic Force and the Maxwell Stress Tensor in Condensed Systems

open access: yes, 2000
While the electromagnetic force is microscopically simply the Lorentz force, its macroscopic form is more complicated, and given by expressions such as the Maxwell stress tensor and the Kelvin force.
Liu, Mario, Stierstadt, Klaus
core   +2 more sources

Study of a double permanent magnet and electromagnet hybrid Halbach array electrodynamic suspension

open access: yesEnergy Reports, 2022
In order to reduce the drag force at low speed and control the levitation force of the permanent magnet (PM) electrodynamic suspension (EDS) system, this paper proposes a double PM and electromagnet hybrid Halbach array EDS system, which uses the double ...
Cheng Luo, Jinfa Guan
doaj   +1 more source

The generalized first law for more general matter

open access: yesJournal of High Energy Physics, 2022
In previous work, a first law of generalized entropy was derived from semiclassical gravitational dynamics around thermal setups using an assumed relation between the matter modular Hamiltonian and the gravitational stress tensor.
Hong Zhe Chen
doaj   +1 more source

Forces in a 3D magnetic field of conducting current contours [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2008
The present paper deals with 3D magnetic field analysis of conducting current contours. The magnetic field and forces were calculated analytically and by FEM applying the Comsol Multiphysics package.
Stancheva Rumena, Iatcheva Ilona
doaj   +1 more source

The confining color field in SU(3) gauge theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We extend a previous numerical study of SU(3) Yang–Mills theory in which we measured the spatial distribution of all components of the color fields surrounding a static quark–antiquark pair and provided evidence that the simulated gauge invariant ...
M. Baker   +5 more
doaj   +1 more source

Analysis and inhibition of radial electromagnetic force in composite magnetic coupler

open access: yesIET Electric Power Applications, 2023
A new inhibition method was proposed for the problem of harmonic of radial electromagnetic force during the operation of the composite magnetic coupler.
Shuang Wang   +5 more
doaj   +1 more source

Torque ripple investigation in coaxial magnetic gears [PDF]

open access: yesMATEC Web of Conferences, 2022
Magnetic gears offer significant advantages such as low noise and vibration level, lower maintenance and higher reliability compared to mechanical gears and are suitable for many applications in the industry.
Tzouganakis Panteleimon   +5 more
doaj   +1 more source

Maxwell–Dirac stress–energy tensor in terms of Fierz bilinear currents [PDF]

open access: yesAnnals of Physics, 2016
22 pages, amended to bring in line with final published ...
Inglis, Shaun, Jarvis, Peter
openaire   +3 more sources

Linear to circular polarization conversion in the sharp focus of an optical vortex [PDF]

open access: yesКомпьютерная оптика, 2021
We have shown that when sharply focusing a linearly polarized optical vortex with topological charge 2, in the near-axis region of the focal plane, not only does a reverse energy flow (the negative on-axis projection of the Poynting vector) occur, but ...
A.G. Nalimov, S.S. Stafeev
doaj   +1 more source

On the Energy-Momentum Density of Gravitational Plane Waves [PDF]

open access: yes, 2004
By embedding Einstein's original formulation of GR into a broader context we show that a dynamic covariant description of gravitational stress-energy emerges naturally from a variational principle.
Bel L   +13 more
core   +2 more sources

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