Results 11 to 20 of about 32,255 (314)

Classical electromagnetism [PDF]

open access: bronze, 2023
W. N. Cottingham, D. A. Greenwood
openalex   +2 more sources

Un-renormalized Classical Electromagnetism [PDF]

open access: greenAnnals of Physics, 2007
This paper follows in the tradition of direct-action versions of electromagnetism having the aim of avoiding a balance of infinities wherein a mechanical mass offsets an infinite electromagnetic mass so as to arrive at a finite observed value. Given that, in this respect the direct-action approached ultimately failed because its initial exclusion of ...
Michael Ibison
openalex   +3 more sources

On the electrodynamics of moving bodies at low velocities [PDF]

open access: yes, 2005
We discuss the seminal article in which Le Bellac and Levy-Leblond have identified two Galilean limits of electromagnetism, and its modern implications.
Arzeliès H   +40 more
core   +5 more sources

Electromagnetic Helicity in Classical Physics [PDF]

open access: green, 2019
This pedagogical note revisits the concept of electromagnetic helicity in classical systems. In particular, magnetic helicity and its role in mean field dynamo theories is briefly discussed highlighting the major mathematical inconsistency in most of these theories---violation of magnetic helicity conservation. A short review of kinematic dynamo theory
Amir Jafari
openalex   +3 more sources

Classical Electromagnetic Theory [PDF]

open access: yesChoice Reviews Online, 2005
Static Electric and Magnetic Fields in Vacuum.- Charge and Current Distributions.- Slowly Varying Fields in Vacuum.- Energy and Momentum.- Static Potentials in Vacuum - Laplace's Equation.- Static Potentials with Sources-Poisson's Equation.- Static Electromagnetic Fields in Matter.- Time-Dependent Electromagnetic Fields in Matter.- Waveguide ...
openaire   +2 more sources

Semi-Active Magnetic Levitation System for Education

open access: yesApplied Sciences, 2021
This paper describes how to construct a low-cost magnetic levitation system (MagLev). The MagLev has been intensively used in engineering education, allowing instructors and students to learn through hands-on experiences of essential concepts, such as ...
Gisela Pujol-Vázquez   +3 more
doaj   +1 more source

Complex variational calculus with mean of (min, +)-analysis

open access: yesTrends in Computational and Applied Mathematics, 2018
One develops a new mathematical tool, the complex (min, +)-analysis which permits to define a new variational calculus analogous to the classical one (Euler-Lagrange and Hamilton Jacobi equations), but which is well-suited for functions defined from C^n
Michel Gondran   +2 more
doaj   +1 more source

Nonlinear extensions of gravitating dyons: from NUT wormholes to Taub-Bolt instantons

open access: yesJournal of High Energy Physics, 2021
Recent work has shown the existence of a unique nonlinear extension of electromagnetism which preserves conformal symmetry and allows for the freedom of duality rotations.
Daniel Flores-Alonso   +2 more
doaj   +1 more source

Dual electromagnetism: helicity, spin, momentum and angular momentum

open access: yesNew Journal of Physics, 2013
The dual symmetry between electric and magnetic fields is an important intrinsic property of Maxwell equations in free space. This symmetry underlies the conservation of optical helicity and, as we show here, is closely related to the separation of spin ...
Konstantin Y Bliokh   +2 more
doaj   +1 more source

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