Natural Science Forum / Physics / Research / July 2009

I've remember reading somewhere than ELF [Extremely Low Frequency]
radio transmission is inefficient because it requires to much power.
If that is the case, wouldn't MW [Medium Wave] radio transmission
require even more power?

Dear Friends,
Back on April 30, I initiated a thread titled "Question about Poincare
but not general invariance of spacetime coordinates and Fourier
kernels."  The next day, I added to that thread, some observations

Hi, guys!
I have stated in an earlier thread in sci.physics.relativity
that Galilean transformation do preserve the wave equation,
contrary to current belief in physics.

Hello to all :)
I'm new to this group and to usenet groups in general.
I've been thinking about this matter for way to long now and I would
like to hear some one else opinion on this.

Would be an interior enclosed by BEC "film" causally disconnected?
--sb

Dear colleagues,
In recent discussions some of researchers expressed serious doubts in
possibility of eliminating big or divergent perturbative corrections
with help of the problem reformulation. Some think that the only way

Hi, does anyone have an opinion about this paper which is published in
a reputable journal:
http://www.cell.com/biophysj/abstract/S0006-3495(09)00777-2
[[Mod. note -- The abstract is concerned with the physical mechanism

Between Jan 28 and Feb 19 of 2009, there were 11 messages here in spr
(news:sci.physics.research) on this, the Subject of my original
submission. My reader's marked the thread expired. I'm stuck. I can't
post to the thread.

Is anyone aware of any papers or research done in order to attempt to
discuss the implications of chaos theory, quantum mechanics, and
network theory on each other and/or reconcile these ideas into a
single model?

Metamaterials with negative index of refraction have been demonstrated
for microwaves and IR and for sound.
In theory, could a metamaterial,  with patterns smaller than 1/2 the
De Broglie wavelength of an electron, be used for negative refraction

I am wondering how to apply the gauss theorem to incompressible fluids and i
have some difficulties.
Imagine a fluid flowing in a pipe that changes its width, so that the fluid
velocity changes accordingly. The total flux across a cylindrical surface

Are gyrovectors real maths or crackpot maths?  My knowledge is not
sufficient to determine this.
Martin Hogbin
[[Mod. note --

Suppose to have two beams in a Mach-Zhender configuration: one in a
waveguide I with amplitude A, a second beam in waveguide II with
amplitude B. Given that the section S of the two waveguides is the
same, the total power in I+II is proportional to |A|^2*S + |B|^2*S.

My question is aimed at objective interpretations of QM phenomena that
treat wavefunction collapse as a real process.
The idea that the act of measurement causes a "real" wavefunction to
collapse to create a real particle raises the question - How does the

I have posted a largely expository paper on quantum "weak values" on my
website www.math.umb.edu/~sp , entitled "What do quantum `weak'
measurements actually measure?".  Click on "papers", which will take you
to a copyright page, where you click "papers" again.