Results 11 to 20 of about 10,575,338 (382)
The Structure of an Electromagnetic Field [PDF]
Proceedings of the National Academy of Sciences, 1918 This elementary field corresponds to a state of affairs in which electric charges of a concentrated form are created and travel along straight lines with the velocity of light, the directions of these lines being specified by the different values of the unit vector s.
H. Bateman
openaire +5 more sources
Journal of Pain Research, 2020 Electromagnetic fields (EMFs) provide a non-invasive, safe, and easy method to treat pain with respect to musculoskeletal diseases. The purpose of this systematic review was to describe the use of electromagnetic therapy in the rehabilitation field by ...
T. Paolucci +5 more
semanticscholar +1 more source
Schwinger effect and backreaction in de Sitter spacetime [PDF]
, 2016 We consider the particle-antiparticle pairs produced by both a strong electric field and de Sitter curvature. We investigate in 1 + 1 D the backreaction of the pairs on the electromagnetic field.
Stahl, Clément, Xue, She-Sheng
core +6 more sources
Frequencies of astrophysical jets and gravitational strengths in the octonion spaces [PDF]
International Journal of Modern Physics D, Vol.31, No.4, id.
2250024, 2022, 2022 The paper focuses on applying the octonions to explore the electromagnetic and gravitational equations in the presence of some material media, exploring the frequencies of astrophysical jets. Maxwell was the first to use the algebra of quaternions to describe the electromagnetic equations. This method encourages scholars in adopting the quaternions and
arxiv +1 more source
VSI electromagnetic fields [PDF]
The Fourteenth Marcel Grossmann Meeting, 2017 A $p$-form $F$ is VSI (i.e., all its scalar invariants of arbitrary order vanish) in a $n$-dimensional spacetime if and only if it is of type N, its multiple null direction $l$ is "degenerate Kundt", and $ _{l}F=0$. This recent result is reviewed in the present contribution and its main consequences are summarized.
Ortaggio, M. (Marcello) +1 more
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Electromagnetic fields in jets [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 8 pages, 5 figures.
Donald Lynden-Bell, Blake D. Sherwin
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IEEE Photonics Journal, 2020 A new hybrid microwave photonic link based on a polarization division multiplexing Mach-Zehnder modulator (PDM-MZM) is proposed. The link enables co-transmission of millimeter-wave (mmW) and sub-6 GHz wireless signals over a seamless single-mode fiber ...
Dong-Nhat Nguyen +7 more
doaj +1 more source
One-Dimensional Magnetic FeCoNi Alloy Toward Low-Frequency Electromagnetic Wave Absorption
Nano-Micro Letters, 2022 A novel FeCoNi carbon fiber (FeCoNi/CF) is obtained through an improved electrospinning technology, which greatly endows the fiber with strong magnetic property.
Bintong Yang +9 more
semanticscholar +1 more source
Universal electromagnetic fields [PDF]
Classical and Quantum Gravity, 2018 We study universal electromagnetic (test) fields, i.e., p-forms fields F that solve simultaneously (virtually) any generalized electrodynamics (containing arbitrary powers and derivatives of F in the field equations) in n spacetime dimensions. One of the main results is a sufficient condition: any null F that solves Maxwell's equations in a Kundt ...
Vojtěch Pravda +3 more
openaire +5 more sources
Applied Sciences, 2023 The performance of low-voltage circuit breaker overload protection degrades slowly during service, and the service state cannot be simply described as a normal state or a fault state.
Kui Li, Xianfeng Peng, Bokai Hu
doaj +1 more source