Natural Science Forum / Physics / Electromagnetism / March 2005

Hi, folks. My first post to this NG. Need someone to shed some light EM
waves for me. I've always had a problem understanding the relationship
between frequency of a wave and the functionality of such things as faraday
cages or antennas. For example, the mesh screen on a microwave ...

What is the real cause of Aharonov-Bohm effect?? As I
understood it. Aharanov-Bohm effect is an effect whereby interfering
electromagnetic potentials can produce effects
on charged particle systems, even at a distance and in

--- quoting Wikipedia on Least Action Principle ---
Action (physics)
From Wikipedia, the free encyclopedia.
In physics, the action principle is an assertion about the nature of

People are subject to make mistakes. Dr. Bearden may be wrong in
the past but he has learned and as a result created a masterpiece.
In this message is the first 25 pages of his worldwide
bestselling "Energy from the Vacuum" book beng crazed over by

To those studying the exotic forms electromagnetisms can take or
its hidden richness. Which of the following do you think is
possible and which is just plain impossible and why.
"What I call "scalar waves" are pure longitudinal EM waves (LW).

The people of loop quantum gravity explain gravitation with loops,
and always say that electrodynamics can also be described by loops.
Has anybody managed to tell the story of classical electrodynamics
- on the same level as Jackson - with loops? How would

I got my physics degree many years ago, and as I remember it, you are told
to think of electricity as positive charges moving along wires. This is for
the purpose of making the circuit calculations work out right. Positive
charge does not really move along the wires; the protons are ...

I found this document very informative and helpful.
http://arxiv.org/ftp/physics/papers/0503/0503132.pdf
Joe

Article subject:      Light Speed versus Special Relativity
Gentlemen of physical science.
This article is posted with a request for reviews prior to activating it on
the website. All comments, corrections and alternate views are welcome.

Does any one have a result of experimental verification of electromagnetic
mass?
Since the existence of electromagnetic mass means a non-zero size of all
charged particles, then it must give the radius of charged particles. So

I wrote in year 2002 "As to why the recent finding of SCIENCE NEWS of
11May02 of a inverse
proximity effect of lead with silver films. Superconductivity
temperature increased from 1.6 K to that of 1.8 K. If we union

Mankind transforms energy from it's various forms to kinetic for the work.
I ultimately believe that we just havn't found the correct method of
transformation to be fully effective at producing renewable energy.
This is mostly because mankind has through the years taught our ...

Does anyone know how I can calculate the magnetic field (in vector form) of
a permanent magnet at a given point?
Thanks

I realize the technical qualifications of the group are varied (from
nonexistent to expert), but I'd like to get everyone's thoughts on the
best area for study in regards to military railguns.  I am a graduate
student and a US military officer at a university that shall remain

Want to have guru's opinion on electromagnetic simulators
comparison.
Our objects are rather complex structures of tools or
products that consists of number of metal parts and