Natural Science Forum / Physics / Electromagnetism / August 2005

You can find an on-line pedagogic comic book on electromagnetic, very
good !   free download:
http://www.jp-petit.com/TELECHARGEABLES/English/For_a_fistful_of_amperes
.htm

The ads for hand drills push higher and higher voltages at higher and
higher prices but I fail to see the logic. What can be done at 24V can
be done at 9.6, just use up the battery space and size the motor
windings properly.

Hello Universe,
If we humans are to wander among your stars, we must first throw out
certain ridiculously wrong notions about physics.  The most startling
of such nonsense relates to the theories of relativity, which reared up

I facing a little problem right now. I was asked to read up on
therdynamic potentials for magnetostriction (to support a doctor
thesis). Yes, it was formulated this broadly. The task was:
"Magnetostriction:

Dear colleagues, sorry,
I do not understand L. Allen's formula.
He sets for a linearly polarized plane wave
A_x = u exp{i(kz-wt)},

I am curious about what would happen to an electrical current in 2
situations.....
Assume that you have 2 wires that, when joined, complete a closed electrical
DC circuit with electrons flowing thusly.....

Would u please tell me that if its possible for two observer, who are
at rest with each other, to have two different reading of the magnetic
field associated with a moving charge (all parameters remains the same
regarding distance of separation etc, etc)

I'm a new member and I hope I can learn a lot from other members.
Now, take a look at this problem, maybe it seems easy, but it has made
me mixed up.
This is the problem: We have a big plate whose density of charge is s

{ As told to Diane Jean by "Thomas" }
Wave phenomena respond to "Lens Objects" in two commonly known ways

them so that the wearer can see better. A mirror bends light waves in a

Special terminology in this article:
{} indicates superscript (including the power).
[] indicates subscript.
~A means the vector A.

In a simple circuit, how is the voltage across and current through a
light bulb converted to the light energy we see?

August 8, 2005
Dear Colleague,
A special issue of the open-access New Journal of Physics, focusing
on negative refraction, has come online today. The Focus Issue

It is quite predictale that all are waves, so check this link:
<http://www.zapfuture.com/pid-23.html>
Let me know your thoughts.

Is EQ1 equal to EQ2 ? or not?  According to Jackson, they are the same,
however I am finding they are not equal.  What do you say?
EQ1 = ((v*a*(x^2 - a^2))/(4*Pi))*Integrate[1, {\[Phi]p, 0, 2*Pi}]*
Integrate[(-Sin[\[Theta]p])*((a^2 + x^2 - 2*a*x*Cos[\[Theta]p])^(-3/2) -

Coming to think about my proposal of a Coulomb Unification of the
forces of physics where in an Atom Totality the strong-nuclear combines
with the weak-nuclear to end up with a nuclear-Coulomb-force. We can
envision the Nuclear-Coulomb as the nuclear-electron that resides