Results 31 to 40 of about 39,531 (283)

Electromagnetic AC and impulse levitations of conductive, dielectric, and magnetic ball [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 1921
The paper presents an analytical solution of levitation problem for conductive, dielectric and magnetically anisotropic ball. The levitation exerts either an AC or impulse magnetic field.
Dariusz Spałek
doaj   +1 more source

Three dimensional origin of Godel spacetimes and black holes [PDF]

open access: yes, 2005
We construct Godel-type black hole and particle solutions to Einstein-Maxwell theory in 2+1 dimensions with a negative cosmological constant and a Chern-Simons term. On-shell, the electromagnetic stress-energy tensor effectively replaces the cosmological
Andrés Gomberoff   +5 more
core   +2 more sources

The polarized interface between quadrupolar insulators: Maxwell stress tensor, surface tension, and potential [PDF]

open access: yesThe Journal of Chemical Physics, 2015
The quadrupolar Maxwell electrostatic equations predict several qualitatively different results compared to Poisson’s classical equation in their description of the properties of a dielectric interface. All interfaces between dielectrics possess surface dipole moment which results in a measurable surface potential jump.
Slavchov, Radomir I.   +2 more
openaire   +3 more sources

A Contribution to the Theory of Rotating Electrical Machines

open access: yesIEEE Access, 2021
This contribution introduces a vector interpretation to unify the description of torque development in rotating electrical machines. The motivation behind this attempt is the necessity of applying different physical interpretation and calculation methods,
Amir Ebrahimi
doaj   +1 more source

Schwarz-Sen duality made fully local [PDF]

open access: yes, 2000
Duality symmetric electromagnetic action a la Schwarz-Sen is shown to appear naturally in a chain of equivalent actions which interchange equations of motion with Bianchi identities.
Deser, Deser, R.L. Pakman, Schwarz
core   +2 more sources

Tetrads in Geometrodynamics

open access: yes, 2004
A new tetrad is introduced within the framework of geometrodynamics for non-null electromagnetic fields. This tetrad diagonalizes the electromagnetic stress-energy tensor and allows for maximum simplification of the expression of the electromagnetic ...
Alcides Garat   +3 more
core   +1 more source

Channel Flow of a Tensorial Shear-Thinning Maxwell Model: Lattice Boltzmann Simulations

open access: yes, 2013
We introduce a nonlinear generalized tensorial Maxwell-type constitutive equation to describe shear-thinning glass-forming fluids, motivated by a recent microscopic approach to the nonlinear rheology of colloidal suspensions.
Batchelor G. K.   +7 more
core   +1 more source

The Third Theorem About Electromagnetic Forces Surface Representation in Anisotropic Regions

open access: yesIET Science, Measurement & Technology
The paper concerns the theoretical problem of the electromagnetic force surface integral representation for diagonally anisotropic regions. The next theorem formulates an extension of the previous theorems, first and second (19), paragraph III.
Dariusz Aleksander Spałek
doaj   +1 more source

Torque characteristic analysis and measurement of axial flux-type non-contact permanent magnet device with Halbach array based on 3D analytical method

open access: yesAIP Advances, 2017
This paper addresses the torque characteristic analysis of an axial flux-type non-contact permanent magnet device with a Halbach magnet array using a 3D analytical method based on transfer relations.
Gang-Hyeon Jang   +3 more
doaj   +1 more source

Vibration Mechanism and Compensation Strategy of Magnetic Suspension Rotor System Under Unbalanced Magnetic Pull

open access: yesIEEE Access, 2022
The existing imbalance compensation strategies for magnetic suspension motors mainly focus on the mass unbalance force, ignoring the effects of the unbalanced magnet pull (UMP).
Li Ji, Xueqing Ma
doaj   +1 more source

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