Bob Day has been running a chi^2 test, reported on s.a.r., on a magnitude-redshift relation in different cosmological models using data from the Supernova Legacy Survey. The...

I was wondering whether it were possible that every particle in the universe is entangled with every other. The argument goes: at the moment of the Big Bang, this was the...

In every situation I'm aware of, energy states exist because of some force that gives rise to them (dE/dx, y'know). What force did Dirac envision as giving rise to his...

Bob Day has been running a chi^2 test, reported on s.a.r., on a magnitude-redshift relation in different cosmological models using data from the Supernova Legacy Survey. The...

Hi folks, I've been watching the flap over Heim Quantum Theory which surfaced as a result of New Scientist publishing an article about a conference paper being awarded a...

From: Dr. H. R. Arabnia C A L L F O R P A P E R S ============================= The 2006 International Conference ...

What is quantum measurement problem? Why do people say decoherence does not solve the quantum measurement problem? Thank your for any of your comment.

OK, I am reviewing my basic quantum mechanics by watching Jim Branson's QM class on streaming video. There is something he keeps say that bothers me. He keeps saying that a...

Hello, There is a new building code in my area and it requires running a 20' piece of rebar connected to the continuous rebar in the footing of the foundation by tying it to...

Hello, I consider only Cartesian tensors in the following. The definition of isotropic tensor function I know is 1) T = F ( G ) such that, for any rotation ( ' =...

want to read it as an introduction course to statistic physics. is it suitable?

Hi: If a *photon* beam can be made, then why can't a *gluon* beam be made? The *Gluon* is to the STRONG force what the *Photon* is to the ELECTROMAGNETIC force....

This interesting thought experiment is based on the classical double slit experiment. First you record (without observing) the which-way information of each particle at the...

Hello, group, groupies, and lurkers and a happy new year to you all. MOEPED 3 (MObile Experimental Physics Educational Demonstrator) was in the parking lot behind this condo...

There are three brothers, Al, Bill and Cal. Bill sets out at 86.6% the speed of light and travels 86.6 light years before returning at the same speed and will have aged by...

Hi, I recently read that the S-matrix does't make sense for conformal field theories. I find that a bit strange, as it is certainly possible to compute the S-matrix in...

I'm looking for experimental values of the charge on a neutral atom - or, equivalently, for experimental values of the sum of the (signed) charge on the proton and on the...

Also available as http://math.ucr.edu/home/baez/week224.html December 14, 2005 This Week's Finds in Mathematical Physics - Week 224 John Baez This week I want to mention a...

Since I have not seen this Q yet posed in this NG. New Scientist did a writeup he http://www.newscientist.com/channel/fundamentals/mg18925331.200.html Anyone care to...

ED209 wrote: does someone know why LHC is (OK, will be) a p-p collider, instead of being a p-pbar one? No matter how trivial the question seems I've yet to find a...