Results 21 to 30 of about 1,456 (141)

Poynting vector flow in a circular circuit [PDF]

open access: yesAmerican Journal of Physics, 2011
A circuit is considered in the shape of a ring, with a battery of negligible size and a wire of uniform resistance. A linear charge distribution along the wire maintains an electrostatic field and a steady current, which produces a constant magnetic field.
Davis, Basil S., Kaplan, L.
openaire   +2 more sources

Vanishing Poynting Observers and Electromagnetic Field Classification in Kerr and Kerr-Newman Spacetimes

open access: yesAdvances in High Energy Physics, 2022
We consider electromagnetic fields having an angular momentum density in a locally nonrotating reference frame in Schwarzschild, Kerr, and Kerr-Newman spacetimes.
H. Vargas–Rodríguez   +4 more
doaj   +1 more source

Revisit the Poynting vector in PT-symmetric coupled waveguides

open access: yes, 2022
We show that the time-averaged Poynting vector in parity-time (PT ) symmetric coupled waveguides is always positive and cannot explain the stopped light at exceptional points (EPs).
Ru-Zhi Luo (14361222)   +2 more
core   +1 more source

Formation of an elongated region of energy backflow using ring apertures [PDF]

open access: yesКомпьютерная оптика, 2019
In this paper, we have investigated the focusing of a second-order cylindrical vector beam by using a high numerical aperture (NA) lens limited by a ring aperture using the Richards-Wolf formulae.
Sergey Stafeev, Victor Kotlyar
doaj   +1 more source

The Poynting Vector Field Generic Singularities in Resonant Scattering of Plane Linearly Polarized Electromagnetic Waves by Subwavelength Particles

open access: yesNanomaterials, 2022
We present the results of a study of the Poynting vector field generic singularities at the resonant light scattering of a plane monochromatic linearly polarized electromagnetic wave by a subwavelength particle.
Michael I. Tribelsky   +1 more
doaj   +1 more source

True Amplitude Angle Gathers from Reverse Time Migration by Wavefield Decomposition at Excitation Amplitude Time

open access: yesEnergies, 2020
Reservoir parameter estimation is one of the goals of amplitude-versus-angle (AVA) inversion and angle-domain common image gathers are the basis of AVA inversion.
Zhe Yan, Yonglong Yang, Shaoyong Liu
doaj   +1 more source

Frequency dependent power and energy flux density equations of the electromagnetic wave

open access: yesResults in Physics, 2017
The calculation of the power and energy of the electromagnetic wave is important for numerous applications. There are some equations to compute the power and energy density of the electromagnetic wave radiation.
M. Muhibbullah   +2 more
doaj   +1 more source

Streamlines of the Poynting Vector and Chirality Flux around a Plasmonic Bowtie Nanoantenna

open access: yesNanomaterials, 2023
The streamlines of the energy flux (Poynting vectors) and chirality flux as well as the intensity of the electric field around various plasmonic nanostructures (nanocube, nanocuboid, nanotriangle, hexagonal nanoplate and bowtie nanoantenna) induced by a ...
Yun-Cheng Ku   +2 more
doaj   +1 more source

John Henry Poynting

open access: yesEducación Química, 2018
John Henry Poynting (1852-1914) es conocido por sus trabajos relacionados con la determinación del efecto de la presión sobre los cambios de fase y la presión osmótica (efecto Poynting) ; la determinación de la constante de la gravedad y la densidad ...
Jaime Wisniak
doaj   +1 more source

Profile Inversion and Closed Form Formulation of Compact GRIN Lenses

open access: yesIEEE Open Journal of Antennas and Propagation, 2021
New formulas for the design of cylindrical Graded-Index (GRIN) lens-antennas with integrated feeder are presented. The possibility of integrating the feeder within the lens makes the system more compact, avoids complex mechanical design and alignment ...
Francesca Maggiorelli   +4 more
doaj   +1 more source

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