Results 21 to 30 of about 15,517,805 (287)

About the Teaching of the Inertial Fieldas Maxwell like-type [PDF]

open access: yesRevista Brasileira de Ensino de Física, 2021
This paper has a didactic aim. The Einstein General Theory of Relativity is very difficult for undergraduates students and also for graduates who have not followed a course of study in gravitational physics.
Elmo Benedetto   +2 more
doaj   +2 more sources

Modeling and Simulation of stochastically deformed Waveguides using Schelkunoff's Method [PDF]

open access: yesAdvances in Radio Science, 2018
This paper deals with the propagation of electromagnetic waves in cylindrical waveguides with irregularly deformed cross-sections. The general theory of electromagnetic waves is of high interest because of its practical use as a transmission medium ...
H. D. Pham, S. Ploennigs, W. Mathis
doaj   +1 more source

Nonstationary discrete theory of excitation of periodic structures and its application for simulation of traveling-wave tubes [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика, 2021
Aim. This article presents a review of the nonstationary (time-domain) discrete theory of excitation of periodic electromagnetic structures and discusses applications of the theory for simulation of traveling-wave tube (TWT) microwave power amplifiers ...
Ryskin, Nikita Mikhailovich   +4 more
doaj   +1 more source

The exact theory for scattering of waves by thick holes in a slab and other objects with non-separable geometries [PDF]

open access: yes, 2011
The theory for scattering of electromagnetic waves is developed for scattering objects for which the natural modes of the field inside the object do not couple one-to-one with those outside the scatterer.
B. J. Hoenders   +2 more
core   +3 more sources

Frequency-Selective Dual Linearly Polarized 76 to 81 GHz Automotive Radar System Concept for Street Condition Monitoring [PDF]

open access: yesAdvances in Radio Science
This study introduces a novel frequency-selective radar system for street condition monitoring (SCM) that eliminates the cost-intensive dedicated monolithic microwave integrated circuit (MMIC) channels approach by sharing radar channels across different ...
S. H. Kazimi   +5 more
doaj   +1 more source

Theory of optical axion electrodynamics and application to the Kerr effect in topological antiferromagnets

open access: yesNature Communications, 2022
Electromagnetic response of topological materials is described the so called axion electrodynamics which contains additional relations between the fields.
Junyeong Ahn   +2 more
doaj   +1 more source

New class of exact solutions to Einstein–Maxwell-dilaton theory on four-dimensional Bianchi type IX geometry

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We construct new classes of cosmological solution to the five dimensional Einstein–Maxwell-dilaton theory, that are non-stationary and almost conformally regular everywhere.
Bardia H. Fahim, Masoud Ghezelbash
doaj   +1 more source

Electromagnetic Doppler effect in non-reciprocal medium

open access: yesAIP Advances, 2023
Reflected light from a moving object, such as a mirror, is frequency-shifted via the Doppler effect. This well-known phenomenon is used to determine the speed and direction of an object due to the red or blue shifting of the received electromagnetic ...
Douglas M. Baney
doaj   +1 more source

Electromagnetic Properties of Neutrinos

open access: yesAdvances in High Energy Physics, 2012
In this paper, we discuss the main theoretical aspects and experimental effects of neutrino electromagnetic properties. We start with a general description of the electromagnetic form factors of Dirac and Majorana neutrinos.
C. Broggini, C. Giunti, A. Studenikin
doaj   +1 more source

Measurement and control systems for an imaging electromagnetic flow meter [PDF]

open access: yes, 2014
Electromagnetic flow metres based on the principles of Faraday's laws of induction have been used successfully in many industries. The conventional electromagnetic flow metre can measure the mean liquid velocity in axisymmetric single phase flows ...
Zhang, T.   +5 more
core   +1 more source

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