By what, if any, methods other than by means of the Lienard-Wiechert potentials can the electric and magnetic fields of a moving point-like charge be derived? Any references...

I once did a calculation for a NG, sci.military.moderated IIRC, concerning the lethality of the hypothetical weapon given a beam pulse energy comparable to the muzzle...

Hi there, I am looking for any reference (article, textbook, etc.) that explains the transition from classical continuum mechanics to classical point mechanics (i.e....

In response to a fair amount of recent discussion about Foldy-Wouthuysen on sci.physics.foundations, someone suggested that a Wiki article be started on this topic because...

In reading a paper I came across an expression that, while simple, I didn't really understand the interpretation of: out|A|in/out|in Where |in and |out are just two...

Adam is standing at the edge of a large disc rotating clockwise. Eve is suspended upside down on a large disc rotating counterclockwise. The relative velocity of the...

The twin paradox has been analyzed many times, and many answers are given. Dr. Parker has pointed to the multiplicity of the answers as proof of its underlying error. The...

Dear All, After several attempts, I finally succeeded to compare my proposal with the Lambda-CDM model. This essay can be downloaded at http://www.e-kr.org/ . Thank you...

I have noticed that Einstein stresses in various places that, whereas the speed/velocity of light is constant in SR, it is not in GR. The reason for my current source of...

I would like to consult in private with with young talented physicists on a variety of topics. Including, but not limited to: quantum electrodynamics, solid-state physics,...

If I take 3 playing cards and arrange them in front of my eye, so that a very small triangular aperture is created by the cards, and I adjust this aperture so that it is...

If two electrodes are sandwitching two dielectric materials with very different dielectric constants (but the same thickness), say, water and glass. Would the new dielectric...

On Jul 5, 12:36=A0pm, ss wrote: Hello Does anyone know about calculating feynman path integral with monte carlo method? Makri's group at...

Hello I have a question regarding KAM curves. KAM theory says that if we add a very small non-integrable Hamiltonian perturbation to an integrable Hamiltonian system, then...

I understand that vacuum fluctuations can spring into and out of existence within a sufficiently short period of time, under the uncertainty constraint. However, I am...

Can someone give me a list of the commutation relations between the L_i and p_i and x_i in ordinary QM ij=123 If not tell me where such a list may be found? I'm...

Analyzing the Muon Experiment as Proof of Special Relativity Muons are continually being formed in the upper atmosphere. They live for about 2.26 microseconds. Travelling...

I'm trying to get a description of how an individual photon goes through glass. It seems to require the full power of field theory. The setup would be like the two slit...

On Jul 5, 5:36 pm, wrote: This was posted on Sci.math but with little response so sorry for cross posting. Is this the right Usenet group for this...

Is there any (general accepted) conceptual precise and mathematically rigorous definition of the concepts "particle" and "quasiparticle" in the framework of non-relativistic...