Results 31 to 40 of about 10,575,338 (382)
On rational electromagnetic fields [PDF]
Physics Letters A, 2020 We employ a recently developed method for constructing rational electromagnetic field configurations in Minkowski space to investigate several properties of these source-free finite-action Maxwell ("knot") solutions. The construction takes place on the Penrose diagram but uses features of de Sitter space, in particular its isometry group. This admits a
Kaushlendra Kumar, Olaf Lechtenfeld
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Sleep EEG-Based Approach to Detect Mild Cognitive Impairment
Frontiers in Aging Neuroscience, 2022 Mild Cognitive Impairment (MCI) is an early stage of dementia, which may lead to Alzheimer’s disease (AD) in older adults. Therefore, early detection of MCI and implementation of treatment and intervention can effectively slow down or even inhibit the ...
Duyan Geng +6 more
doaj +1 more source
On the genesis of Post constraint in modern electromagnetism [PDF]
Optik, Vol. 115, pp. 151-158 (2004), 2004 The genesis of the Post constraint is premised on two attributes of modern electromagnetism: (i) its microscopic nature, and (ii) the status of e and b as the primitive electromagnetic fields. This constraint can therefore not arise in EH--electromagnetism, wherein the primitive electromagnetic fields are the macroscopic fields E and H.
arxiv +1 more source
Quantum scalar field in FRW Universe with constant electromagnetic background [PDF]
, 1997 We discuss massive scalar field with conformal coupling in Friedmann-Robertson-Walker (FRW) Universe of special type with constant electromagnetic field. Treating an external gravitational-electromagnetic background exactly, at first time the proper-time
Coleman S. +13 more
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Field Equations in the Complex Quaternion Spaces [PDF]
, 2014 The paper aims to adopt the complex quaternion and octonion to formulate the field equations for electromagnetic and gravitational fields. Applying the octonionic representation enables one single definition to combine some physics contents of two fields,
Weng, Zi-Hua
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Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures
Light: Science & Applications, 2017 Graphene has great potential for enhancing light−matter interactions in a two-dimensional regime due to surface plasmons with low loss and strong light confinement.
Zebo Zheng +11 more
semanticscholar +1 more source
High frequency characterization of Galfenol minor flux density loops
AIP Advances, 2017 This paper presents the first measurement of ring-shaped Galfenol’s high frequency-dependent minor flux density loops. The frequencies of applied AC magnetic field are 1k, 5k, 10k, 50k, 100k, 200k, 300k, 500 kHz. The measurements show that the cycle area
Ling Weng +4 more
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, 2018 In electromagnetism, as in Newton's mechanics, action is always equal to reaction. The force from the electromagnetic field on matter is balanced by an equal and opposite force from matter on the field.
Sebens, Charles T.
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ELECTROMAGNETIC FIELDS ON FRACTALS [PDF]
Modern Physics Letters A, 2006 Fractals are measurable metric sets with non-integer Hausdorff dimensions. If electric and magnetic fields are defined on fractal and do not exist outside of fractal in Euclidean space, then we can use the fractional generalization of the integral Maxwell equations. The fractional integrals are considered as approximations of integrals on fractals. We
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Mechanical-magnetic-electric coupled behaviors for stress-driven Terfenol-D energy harvester
AIP Advances, 2017 The stress-driven Terfernol-D energy harvester exhibits the nonlinear mechanical-magnetic-electric coupled (MMEC) behaviors and the eddy current effects.
Shuying Cao +7 more
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