Natural Science Forum / Physics / Research / December 2006

Hi;
   Can anybody explain me whatis the relation between electron
movement in a conductor and power factor. i.e. how can we relate change
in power factor with change in movement of electron in a wire.

I've been looking at Heim theory for some time now.  I got copies of
Heim's books and finally have reached an understanding of how it works.
To briefly explain what this involves,  there is a mysterous matrix Heim
called "A" in Heim's equation that is involved in all the mass

are there any angular momentum operators for, say, a hydrogen atom,
that raise and lower the angular quantum number l (ell) up and down,
as opposed to the Lx + iLy type operators that move the magnetic
quantum number m, "sideways" as it were but leave l unchanged?

I have been reading Kevin Brown's intriguing "Mathpages"
http://www.mathpages.com/rr/s9-10/9-10.htm and found his arguments
against free photons to be fairly persuasive:
"From the standpoint of quantum electrodynamics, the wave properties of

I recently asked a question about the equivalence principle that got me
thinking about the photon in a gravitational potential argument that is
purported show that gravity cannot be handled in Minkowski space. (The
argument constructs a parallelogram in spacetime whose parallel ...

If there is a changing flux through a loop of conducting wire then a
current is produced. Lens' law says that this current produces a B
field that opposes the change. But wait, should this new B field be
included in with the original whose changing flux is causing the

Dear Colleagues,
I would like to know how the wavefunction of the collection of
non-interacting n electrons and M(m) noninteracting nulclei looks like [m -
number of identical  nuclei of type M] . For example two electrons and two

Roger Shawyer was invited to give an IEEE Evening Lecture on November
23rd, 2006, to be delivered at Imperial College London. The topic was
his controversial "propellant-free" drive for spacecraft.
A couple of posters to this Usenet group mentioned that they'd try to

When the light is too bright, there is a star of light on some place of
the object.
I tried to find something connected with the nature of this effect and
couldn't. Do you know why and how to calculate (or where to read) where

I'm in the process of learning conformal field theory from Di
Francesco, Mathieu, Senechal,
and need some help with something I perceive as a paradox:
There are three Ward identities associated with global conformal

I recently discovered an error I'd made in a simple analysis of a
situation in special relativity, and I thought it was worth describing
here, to help others to avoid falling into the same trap.
The situation I was analysing was a hyperelastic string suspended above a

My question is about whether spacetime has a spin structure.
I don't know that much about how spinors are used in physics (well a
little bit) but I had always assumed that a spinor field was a section
of an associated  bundle constructed from the spin cover  of the O.N.

What would actually happen if a small stable or long-lived black hole
fell into the ground? Or even a naked singularity or some other strong,
compact gravitational source?
The idea's been on my mind, lately, to take the same route Sagan took

This is a follow up to the earlier thread "Questions about Higgs
scalars."
In the context of QFT, I am especially interested in learning as much as
possible about the origins and uses of the factor:

I have a basic question about superconductive transition-edge sensors
(TES) when used in the x-ray gamma ray range. I understand that a
photon's interaction with the detector will raise the temperature
proportional to the photon's energy in a thermal detector or