Description:
Current physics research. (Moderated)
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detection induced field collapse challenged by experiment or not?
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I have performed an experiment which may indicate that the photon
interference pattern may form prior to reaching the detection screen.
In this experiment laser light is split into separate paths by a non-
polarizing beam splitter and a single slit is placed in each path.
The paths are then brought back into nearly parallel paths by front... more »
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CFP: Optical SuperComputing workshop 2012
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CFP: Optical SuperComputing Workshop 2012
4rd International Workshop on Optical SuperComputing in Bertinoro
(OSC12)
July 19-21, Bertinoro, Italy
[link]
SCOPE:
OSC, the International Workshop on Optical SuperComputing, is an
annual forum for research presentations on all facets of optical... more »
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Requirement for Clock Synchronization
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I had always assumed that the synchronization of clocks at widely
separated locations to arbitrary accuracy would require a signal,
something that carries information, to travel between the two
locations arbitrarily fast.
If I assume that many entangled particles are being sent
simultaneously to two separated locations and measurements made at... more »
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integrability in thermodynamics
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Hello
Hannay ("Carnot and the fields formulation of elementary
thermodynamics," Am. J. Phys, v74, Feb 2006 pp134-140) writes the 1st
and 2nd laws as d^w'+d^q'= 0 (1st) and d^(q'/T) = 0 (2nd). Here the
prime ' means a co-vector and ^ is the wedge product.
In both cases it is true locally in a simple domain (one that can be... more »
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Heisenberg matrix mechanics origins
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I picked up a copy of Dirac's public lectures, "Directions in
Physics", Wiley 1978, ISBN 0-471-02997-1, which immediately
(page 5) reminded me of a question I never understood.
Paraphrasing a few page 5 paragraphs:
Heisenberg (in 1925) felt physical theory should concentrate
on quantities closely related to observed quantities. And... more »
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Interaction of gravitational waves with matter
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Hello,
Lately I've been trying to understand the interaction of gravitational
waves with matter. In an article outlining a simplified treatment of a
Weber Bar detector a model of matter was used which approximates the bar
as a series of mass slabs connected by springs each obeying Hook's
law. The 4-acceleration of each slab is given by the geodesic equation... more »
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tests of Einstein's equation in matter
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Einstein's field equations in empty space i.e. R_ik = 0
agree with observations.
Can we say the same for the equations in the
presence of matter i.e. G_ik = 8 pi T_ik ?
Do you know some astrophysical (= not
cosmological) test supporting them ?
Thanks in advance.
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boxy galaxies
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Hi !
what about the so called "boxy galaxies " ?
See e.g the square galaxy in:
[link]
Any explanation in the framework of current astrophysics?
Thank you in advance
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follow up to superluminal neutrinos?
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Recently I have been doing some historical research into the debate on this CERN experiment. As despite being a retired electronics engineer I have a degree majoring in the history of science and engineering, I flatter myself that I am properly qualified to do such research. I am also an experienced... more »
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On Average Each Month 16 Close Gamma Bursts ??????
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Just read are gamma ray detectors are showing this. They have to be tiny
explosions being as close as 1 LY away. They claim the source could be
two black holes,or two neutron stars colliding. Very interesting Could
answer other hard questions. Will LIGO be used? TreBert
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