Natural Science Forum / Physics / Electromagnetism / August 2006

Hi all!,
Though my question looks misfit in this discussion group but thought
worth trying if someone would give me some clue.
I have two cameras placed at known distance on earth, synchronized.

Say I have a lighting display that converts the input electrical energy
to light, say an array of LED's. Is there a direct conversion from the
input power to the produced luminance, factoring in a given conversion
efficiency, area of display, and light wavelength? If other factors ...

Easy (?) question.
I am wondering what my eyes (or an oscilloscope or other instrument)
would see if I was looking at a material with a smoothly changing
dielectric constant, if I send a pulse into a conductor running through

At the website
http://www.magnetsales.com/index.htm
there is a calculator to give the force between two rectangular
magnets.

I'm a radio engineer trying to understand the world.
Reading about SR and GR I have the concept that the force due to
gravity is not actually a force but is actually the curvature of space
time and that objects in "free fall" simply follow the curve of

Is Gauss law correct or has it been disproved

I have several magnets (bars) of well known size.
These magnets are placed on a table and they can rotate around their
center until they reach a stable state.
I want to know if there are some mathematical formulas which can

I am currently a highschool student and am trying to do a project on
magnetism. The project which I am going to do involves two magnets
seperated by a fluid; thus, there is a field present in the fluid
itself. I will then attempt to apply a counter magnetic field to

I am having trouble obtaining a numerical solution to an
advective-diffusive wave equation for a light pulse, which is of the
form:
du/dx = 1/v * du/dt + ig * d^2u/dt^2

I want to note that an intentional concealment of serious longstanding
mistakes of physicists is a crime, because they get pay and grants.
Unfortunately, I have response neither from PR's Editors nor from APS
(Ken Cole).

Does this mean that if a 110volt generator will still excite a stator
at a distance of 1/32" that a 110volt generator being designed to
handle twice the ampherage would ( in a perfect world )be able to
excite a stator at 1/16"?

Can anyone tell me approximitly what a genaerator might still produce
if the magnetic field were being fed 110volts/50 amps and the stator
was 1/32" away from the magnet ?Would the same values hold true for
220v/50amps at 1/16"?What about 110v/100amps at 1/16"?Obviously,I am

does the radius of a magnetic field increase as the ampherage increases
in an electromagnet or are there just more lines of force within the
radius ?

I have a simple question to ask here. If I send a short electromagnetic
impulse towards a infinite large thin metal plane, I should get two
reflections, one for the air->metal interface and one for the
metal->air interface. How to calculate the time gap of the two

Can anyone tell me where to find B-H information for pure iron and
other materiald when the material is in saturation.  Since the B-H
curve is truely linear well past saturation I would only really need
one data point of the B-H relation at a B Field that is maybe twice the