I would like to discuss how one establishes the gravitationally-covariant derivative of the coordinates x^u. The context for the question I am raising here, arises from a...

This is a simple problem-I send a collimated beam of white light down one path. It strikes a absorptive coated mirror and returns back down the same path. Can I detect the...

I've nominated the Wikipedia article "Speed of light" (http://en.wikipedia.org/wiki/Speed_of_light) for peer review, and another Wikipedian suggested to contact other people...

http://www.sc-innovation.com/entity.html I like problem solving and I tackle puzzles whenever I have spare time. I have worked with the following puzzle for a long long...

In 2 dimensions, the intrinsic curvature (the curvature that beings that live on the manifold actually notice) is just the angular deficit per unit area. The angular...

Uppsala University hereby declares the position of Post-Doc at the Ångström laboratory, Department of Physics and Astronomy, Subdepartment of High-Energy Physics,...

I'm aware of the Stern Gerlach classic experiment to measure electron spin ( or mag moment) but was there another that used electric fields instead of magnetic fields to...

I remember in high school physics reading that when an electron and an anti-electron meet they yield two gamma particles. My question: What happens to the kinetic energy of...

On Oct 4, 2:36Â*pm, Rick T wrote: Greetings I'm trying to calculate hydrogen intensity lines but not sure how? I can calculate the wavelength...

When speaking of extra (beyond 4) dimensions the hypothesis is often given that the extra dimensions are curled up and the example is given of the stretched wire - which...

I would like to modify a framework for structured quantum search first suggested by Kastella-Freeling (preprint quant-ph/0109087), perhaps correcting a flaw in their...

I have attempted to obtain a contracted version of the relationship: R^a_buv A_a = A_b (2) which defines the Riemann tensor. The calculation is in the one-page...

Is Joy Christian disproof of Bell's theorem (arXiv:quant-ph/0703179) accepted? I believe the following simple example to be consistent with Christian's disproof: Let q=...

On 4 Oct, 21:36, Rick T wrote: Greetings I'm trying to calculate hydrogen intensity lines but not sure how? I can calculate the wavelength and...

I like to think outside the box, proving again that a little knowledge is a dangerous thing. But I would love someone to run the numbers and show that this thought has no...

NEW CANONICAL SCIENCE REPORT Theories reducing to Newtonian gravity: general relativity doesn't Scientific knowledge is accumulative. Theoretical and...

In article , Rick T wrote: Greetings I'm trying to calculate hydrogen intensity...

On Sep 6, 5:59*am, Lester Welch wrote: Is Joy Christian disproof of Bell's theorem (arXiv:quant-ph/0703179) accepted? No, he is a crackpot. As for...

Dear Friends, Linked below is a three page exercise showing how the pure, linear Maxwell field is integrated by parts in...

This question is subtle and those who may answer it are prone to fall into "frame of mind" traps that I'm specifically trying to avoid here; particularly the "discrete vs....