Natural Science Forum / Physics / Research / May 2006

Okay guys.This is a serious question.
What is the property of a photon which makes it to move in a constant
velocity?
Thanx in advance.

Originally from: Re: Negative Probability & 19th Century Quantum
Mechanics
http://groups.google.com/group/sci.math/msg/19afb0eb79c9d334?dmode=source
In reference to interpreting negativity of the Wigner function as an

Browsing NASA's "Multimedia Space Educator Handbook" I found this.
"Pluto is now known to be far too small to have caused the apparent
differences between Neptune's predicted and observed orbits, however,
and the source of these differences remains unresolved."([1])

I have noticed that if a curved space-time M is equipped with a
parallelization w: T(M) -> R^4, and the Dirac lagrangean is formulated
as,
L = Psi^bar (i gamma^k (d Psi) /\ * w_k + (i/2) gamma^k Psi d * w_k -

I would like to know the main reasons why the push gravity concept is
not considered as a viable concept by mainstream science. I know it
gave rise to numerous published works, amongst which we have those of
Lorentz, H.Poincare, F.Brush, Secchi, Leray, V.Thomson, Schramm, Tait,

I am surprised that there has not been even a single post on this forum
even though this eems
to be the hottest topic in gr-qc over the past one year. for those who
came late, the set of papers

If i have prepared an electron with a definitive spin projection along
x axis (say up) and I accelerate the electron by an E field would the
spin projection on x axis change according to QM?

I have a question about piezoelectricity in GR...
In conserving energy in GR, it's accepted Div T =0 , i.e.
T^uv;v=0.
That is also an exchange between the mechanical

Why is the (mass)^2 term of the Higgs Boson negative in the Standard
Model Lagrangian to start with? I understand that along with the H^4
term, it gives rise to dynamical symmetry breaking, which explains a
bunch of stuff (and eventually gives us a physical mass term for the

Just like religion, modern physical analysis creates the basic
concepts, which we do not understand, and nevertheless, must accept on
faith and use to derive all derivative natural laws. It would be a pity
if it turns out that present human intelligence is inadequate to grasp

In quantum field theory space-time seems to play the same
role as it does in classical physics namely one expresses
quantities as functions of space and time. Is this changed=20
in a significant way in loop quantum gravity? Are fields

Can anyone tell where (in a textbook) the interaction and building of
atoms (the cross-sections) of ions with electrons at different relative
energies has been calculated?
Thank you very much in advance?

Can anyone explain to me what the landscape is, and why there are so
many vacua in string theory?
Thanks

In the conventional treatment of hydrogen atom using Schrodinger's
equation, we assume a spherically symmetric electric potential with the
source (proton) at the origin of the (spherical polar) coordinate
system. How can this be?  Here we consider electron to be represeneted

I am interested in a possible application of an old technology which is
seemingly ignored by common texts.
This is the tribo-electric amplifier as exemplified by Edison's
Electromotograph telegraphic relay and Chalk telephone, and as I