Dielectric Sphere in Time Varying Field

AI Thread Summary
The discussion centers on the effects of a dielectric sphere in a spatially uniform time-varying electric field. Users are seeking resources related to Mie and Rayleigh scattering but find them insufficient for their needs. The primary inquiry is whether the perturbation of the field will maintain the same frequency when a dielectric is introduced. It is confirmed that, assuming a linear response from the dielectric, the resultant field will indeed have the same frequency, ω. This holds true unless the field strength is exceptionally high, which can lead to frequency doubling or tripling in certain crystals.
Apteronotus
Messages
201
Reaction score
0
Hi,

I'm interested in how a dielectric sphere effects a (spatially) uniform time varying field.

I'm sure I'm not the first to inquire about this very topic. Could anyone direct me to a resource?

Thanks,
 
Physics news on Phys.org
Try searching on Mie scattering and Rayleigh scattering.
 
Thanks Marcusl.
Unfortunately I didn't find what I was looking for. any other ideas?
 
Changing E-field and Dielectrics

Hi,

If I have a spatially uniform field whose magnitude is changing in time (say \vec{E}=E_o\sin(\omega t)\vec{k})
and I place a dielectric in this field, will the perturbation of the field have the same frequency?
That is, will the resultant field have a frequency \omega?
 
Yes, assuming that the dielectric has a linear response. This is usually a good assumption unless the field strength is very high (for example, certain crystals are used to double or triple the frequency of intense laser light).
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'
So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
Back
Top