Natural Science Forum / Physics / Research / August 2005

Dear Experts,
I believe that the standard textbook presentations of the quantum mechanical
double slit experiment are often poor. They throw in complicating elements
that tend to confuse beginning students and obscure, at least in the

See
http://canonicalscience.blogspot.com/2005/08/what-is-history-of-relativity-theor
y.html
for additional details and references.
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I am confused by the fact that there is a background gauge field put in
when talking of the T-duality of open strings with chan-paton factors.
Since string theory is a first quantized theory of strings are we
allowed to put in gauge fields in the theory by hand?

Any thoughts on the plausibility of the below suggestions for a role of
quantum physics in neuroscience/psychology?
------------------------------
J.M. Schwartz, H.P. Stapp & M. Beauregard (2005) "Quantum physics in

Does anyone know of a painless introduction of Branes from the
viewpoint of string theory?

As an example, from page 34 of
http://web.mit.edu/2.151/www/Handouts/EnPwrFlow.pdf (other references easy
to find)
"Thermal Inductance:  No significant physical phenomenon has been observed

Hope this isn't a dumb request. I am an undergraduate student and in
one of the experimental subjects I was asked to choose an interesting
experiment.
The criteria were that I ought to be able to do it in 12-18hours and

Minkowski claimed scientific priority for a great, new,
geometric theory of relativity at the Cologne lecture
of 1908, based largely on the work of Henri Poincaré.
Poincaré was purposely excluded from the meeting.

Fundamental physical ideas should not only be sound in details but also
sensible conceptually.
General relativity says that non-gravitational physical processes occur
on the geometrical framework created by gravitational field. We observe

I have been out of physics research for a while. Will someone please
enlighten me? Thank you.
the softrat
Sometimes I get so tired of the taste of my own toes.

..or a perfect sphere of uniform density (at rest) with total mass,
M?
(You get to pick the coordinate system! Just remember to
define/explain it.)

If I have a desired attitude quaternion:
q0_d = 0.707
q1_d = 0
q2_d = .707

I came accross this puzzle while reading Goldstein's "Mechanics".
As we all know, the i,j th component of the stress tensor gives the
flux of the ith component of momentum, accross
a surface of constant x^j. In other words it is the ith component of

I didn't found an answer to my still not too exciting question so here i
go: what happens if a stream of light is to pass a transparent
glass-form which is filled with vakuum? can it pass?
i would thank you a lot for an answer, many greetings, monika

Apologies in advance if this is a "newbie" question, but in the
presence of strong gravitational fields, will gravitational waves start
interacting with each other, to the extent that gravitational collapse
may take place?