Results 31 to 40 of about 383,957 (288)

Electromagnetic Transients in Multiconductor Transmission Lines

Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2022
The theory of multiconductor transmission lines is based on the principle of superposition. According to this principle, any electric or magnetic field can be represented as the sum of individual electric or magnetic fields.
Rooney R. A. Coelho, Domingos T. da Silva Neto, José Roberto Cardoso   +2 more
doaj   +1 more source

Non-Singular Charged Black Hole Solution for Non-Linear Source [PDF]

, 1999
A non-singular exact black hole solution in General Relativity is presented. The source is a non-linear electromagnetic field, which reduces to the Maxwell theory for weak field.
A. A. Tseytlin, A. Borde, A. Borde, Alberto Garcia, C. Barrabès, Eloy Ayon-Beato, H. P. Oliveira, H. Salazar, J. H. Horne, M. Cvetic, M. Mars, S. Chandrasekhar, S. W. Hawking   +12 more
core   +2 more sources

The Process of Gravity

Reports in Advances of Physical Sciences, 2022
Fascinated people from the dawn of history, gravity is not understood, still. Here, we suggest that gravity is a result of a process in the material: (1) Gravitational photons are produced by all atoms that exist in nonzero temperature and or interact ...
Ophir Flomenbom
doaj   +1 more source

On the existence of the field line solutions of the Einstein-Maxwell equations

, 2017
The main result of this paper is the proof that there are local electric and magnetic field configurations expressed in terms of field lines on an arbitrary hyperbolic manifold. This electromagnetic field is described by (dual) solutions of the Maxwell's
Vancea, Ion V.
core   +1 more source

Out-of-equilibrium electromagnetic radiation

, 2003
We derive general formulas for photon and dilepton production rates from an arbitrary non-equilibrated medium from first principles in quantum field theory.
A. Niegawa, B. Alessandro ., C. Gale, C. Greiner, C.T. Traxler, D. Bohm, D. Boyanovsky, D. Boyanovsky, D. Boyanovsky, D.W. McKay, E.L. Feinberg, F. Arleo ., G. Aarts, G. Aarts, J. Berges, J. Berges, J. Kapusta, J. Kapusta, J.M. Cornwall, J.S. Schwinger, Julien Serreau, K. Kajantie, K. Rajagopal, L.D. McLerran, L.V. Keldysh, M. Le Bellac, M.E. Carrington, M.E. Carrington, M.G. Mustafa, M.G. Mustafa, P. Arnold, P. Aurenche, P. Aurenche, P.F. Kolb, R. Baier, R. Baier, R. Baier, S.M.H. Wong, T.S. Biró   +38 more
core   +1 more source

General relativistic theory of gravity and electricity

Revista de Investigación de Física, 2022
As gravitation and electromagnetism are closely analogous long-range interactions, and the current formulation of gravitation is given in terms of geometry, we expect the latter also to appear throug the geometry.
Mississippi Valenzuela
doaj   +2 more sources

A General Formalism for Electromagnetic Response Based on Quasi-Energy Derivatives Within a Single-Determinant Framework

Chemistry
A unified electromagnetic response theory has been formulated in terms of quasi-energy derivatives within the nonrelativistic single-determinant framework.
Xinxin Liu, Daoling Peng, Feng Long Gu
doaj   +1 more source

Electromagnetic energy density in hyperbolic metamaterials

Scientific Reports, 2022
We present the theory of electromagnetic energy propagation through a dispersive and absorbing hyperbolic metamaterial (HMM). In this way, the permittivity tensor components of HMM (especially, nanowire HMM) may appear to be hopeless, but as a non ...
Afshin Moradi, Pi-Gang Luan
doaj   +1 more source

Electromagnetics from a quasistatic perspective [PDF]

, 2006
Quasistatics is introduced so that it fits smoothly into the standard textbook presentation of electrodynamics. The usual path from statics to general electrodynamics is rather short and surprisingly simple.
Backstrom Gunnar, Griffiths David J., Haus Herman A., Jefimenko Oleg D., Jonas Larsson, Smythe William R.   +5 more
core   +2 more sources

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source