Results 11 to 20 of about 2,208,450 (302)

Rotation of electromagnetic fields and the nature of optical angular momentum [PDF]

open access: yes, 2010
The association of spin and orbital angular momenta of light with its polarization and helical phase fronts is now well established. The problems in linking this with electromagnetic theory, as expressed in Maxwell's equations, are rather less well known.
Barnett, Stephen M.
core   +4 more sources

Computation of transient electromagnetic fields due to switching in high voltage substations [PDF]

open access: yes, 2010
Switching operations of circuit breakers and disconnect switches radiate transient electromagnetic fields within high-voltage substations. The generated fields may interfere and disrupt normal operations of electronic equipment.
Siew, W.H., Musa, B.U., Judd, M.D.
core   +4 more sources

TORSION AND THE ELECTROMAGNETIC FIELD [PDF]

open access: yesInternational Journal of Modern Physics D, 1999
In the framework of the teleparallel equivalent of general relativity, we study the dynamics of a gravitationally coupled electromagnetic field. It is shown that the electromagnetic field is able not only to couple to torsion, but also, through its energy–momentum tensor, produce torsion.
De Andrade, V. C., Pereira, J. G.
openaire   +3 more sources

Feasibility of a cohort study on health risks caused by occupational exposure to radiofrequency electromagnetic fields [PDF]

open access: yes, 2009
Breckenkamp J, Berg-Beckhoff G, Muenster E, et al. Feasibility of a cohort study on health risks caused by occupational exposure to radiofrequency electromagnetic fields. Environmental Health. 2009;8(1):23.Background: The aim of this study was to examine
Blettner, Maria   +23 more
core   +2 more sources

Electromagnetic fields in jets [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2007
8 pages, 5 figures.
Sherwin, B. D., Lynden-Bell, D.
openaire   +2 more sources

ELECTROMAGNETIC FIELDS ON FRACTALS [PDF]

open access: yesModern 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
openaire   +3 more sources

Controlling Electromagnetic Fields

open access: yesScience, 2006
Using the freedom of design that metamaterials provide, we show how electromagnetic fields can be redirected at will and propose a design strategy. The conserved fields—electric displacement field D , magnetic induction field B , and Poynting vector B —are all ...
Pendry, J. B., Schurig, D., Smith, D. R.
openaire   +3 more sources

Literature review on the potential effects of electromagnetic fields and subsea noise from marine renewable energy developments on Atlantic salmon, sea trout and European eel. Scottish Natural Heritage Commissioned Report [PDF]

open access: yes, 2011
Background This report reviews the current state of knowledge with regard to the potential for three fish species of conservation importance, namely Atlantic salmon (Salmo salar), sea trout (Salmo trutta) and European eel (Anguilla anguilla), to be ...
Gill, Andrew B., Bartlett, Mark D.
core   +7 more sources

Characterisation of exposure to non-ionising electromagnetic fields in the Spanish INMA birth cohort: study protocol [PDF]

open access: yes, 2016
Analysis of the association between exposure to electromagnetic fields of non-ionising radiation (EMF-NIR) and health in children and adolescents is hindered by the limited availability of data, mainly due to the difficulties on the exposure assessment ...
Guerra Pereda, David   +92 more
core   +2 more sources

Optical Transmitters without Driver Amplifiers—Optimal Operation Conditions

open access: yesApplied Sciences, 2018
An important challenge in optical communications is the generation of highest-quality waveforms with a Mach–Zehnder modulator with a limited electrical swing (Vpp).
Arne Josten   +4 more
doaj   +1 more source

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