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Questions related to Electromagnetism
What is responsible for the exhibition of side lobes of the real part of the Dielectric function of metallic material
07 July 2017 2,865 4 View
A question for existence of a mathematical evidence for simultaneous wave propagation for electric field and magnetic field was already raised by G. Udhaya Sankar in connection with the...
07 July 2017 4,857 24 View
This question is about Maxwell equations. Maxwell equations imply wave (differential) equations for electric field and magnetic field. I never found any mathematical evidence for the following: ...
07 July 2017 9,932 29 View
Hello, I am looking for material which has electric field dependent anisotropic electrical conductivity. Say for instance, its conductivity in x-direction (sigma_xx) changes with the applied...
07 July 2017 7,416 2 View
I saw some research on optical properties mentioned “dielectric function” which can give some information to optical absorbing properties. I am confused by the permittivity of dielectric materials...
07 July 2017 2,341 9 View
I was wondering is there any material (elementary or composite) which has electric field-dependent anisotropic conductivity around 2.5e^-2 S/m. Say for instance, the conductivity of the material...
07 July 2017 5,913 2 View
while considering the current flow in parallel conductor. how does definitely said that the direction of magnetic field is opposite or not and direction of flux density inside the plane or outside...
07 July 2017 3,984 3 View
06 July 2017 2,495 8 View
02 July 2017 7,488 3 View
Michael Faraday experimented with 4 ice pails what about infinite of them.
18 June 2017 5,464 3 View
We often see two relation for calculation the dielectric permittivity: (1) E= C/C0 where E = dielectric permittivity, C = capacitnace and C0 is the geometric capacitance. (2) E =...
06 June 2017 793 3 View
Gravity, Magnetic, Regional/residual separation
06 June 2017 7,538 3 View
What models are there for light in a plasma and in a lightning at thunder? Maxwell's equations is not so easy to invoke in continuum mechanics.
06 June 2017 8,131 11 View
In fact it is not difficult to calculate its rest mass but in the experiments as far I know the electron is in motion. With this question there is the notion of charge, if the electron is in...
06 June 2017 8,705 43 View
In Hall effect, an applied magnetic field induces a transverse voltage in a sample. However, Faraday's law states that a time varying flux creates a voltage. Is it possible to incorporate Hall...
06 June 2017 3,597 5 View
Gravity to magnetic
06 June 2017 8,494 5 View
I am new to COMSOL Multiphysics. I want to trap charged particle using electrokinetic force in a nanopore. but I cannot be able to under which module should I use? I found some papers but I could...
06 June 2017 9,844 2 View
All known EM antennas contain electrical current inside at radiation. What if someone mixes together dynamic electric field generated near ferroelectric piece and dynamic magnetic field near a...
11 May 2017 8,288 10 View
Does anyone know if the poisson solver will enable the calculation of capacitance between electrodes with a cylindrical structure?
10 May 2017 4,226 3 View
A material found where electric field induces a magnetization, and a magnetic field induces a polarization. This is against the ordinary material where polarization is induced by electric field....
09 May 2017 5,545 4 View
I looked at energy conservation in e.g. a pipe, assuming internal energy proportional to temperature. Then with the ideal gas law, the static solution is a mode shape, with wavelength depending on...
05 May 2017 8,692 2 View
What happens with an electromagnetic wave if it has to pass an opening between EM absorbers that is less than the wavelength? And what happens if the opening between the absorbers is larger than...
05 May 2017 6,123 4 View
05 May 2017 3,815 11 View
electric flux density is equal to (numerically ) to the charge per area ..... but what are those lines ?? , the electric field strength is represented by lines .... however such lines do not ...
05 May 2017 1,840 8 View