Recent content by ConformalGrpOp

The question I raised here does not appear to be addressed in any other thread on PF. The issue was apparently considered by Sandage as early as 1961. At that time, it was concluded that the spectral drift would be impossible to detect with the instruments available. Loeb further...

I am interested in locating information of the evidence of z evolution that has been collected of the spectra of relatively high z sources over the previous 75(35) years. Before I get too far into the question, I thought I would try to find what research might have been done on the subject...

Thank you Marcus and Chronos. I get the idea. With this in mind, the only asymmetric phenomena one could associate with the redshift that I can conceive of (though I wouldn't necessarily exclude the possibility of others), is where the recession velocity of the system is just below the speed...

I am interested in whether it is necessary to account for the effects of the Hubble Redshift in determining the rotation velocities of galaxies exhibiting keplerian motion and, in particular, whether the associated spatial expansion of the Universe is known to result in spectral shifts that...

Thank you DaleSpam. That's what I thought.

The news threads and press releases I have read of the work of Halfmann and his colleagues at the IAP, Darmstadt, report that they were able to bring "light" to a "standstill" within a material for about a minute. I haven't had the chance to read the groups published papers on the subject yet...

harrylin: Is there a reference you can provide that directly explains the last statement, "the emission frequency of stars is reduced so that part of the "missing" energy already wasnt there"? I guess I am unclear by what you mean by "already" wasnt there... Question: Suppose we have a...

Thank you Nugatory and DaleSpam. I have since done some further reading on tests of SR, e.g.: http://relativity.livingreviews.org/Articles/lrr-2005-5/download/lrr-2005-5Color.pdf http://arxiv.org/pdf/hep-ph/9703240v3.pdf...

In a paper published in Reviews of Modern Physics in 1949, http://journals.aps.org/rmp/pdf/10.1103/RevModPhys.21.378 , H.P. Robertson provided an analysis of the physical implications of the Michelson/Morley, Kennedy and Thorndike, and Ives and Stilwell experiments which seems definitive with...

Hey Naty1, maybe we can audit RUTA's course! Ok, well, maybe not! Thanks Naty1 for the references cited early in this thread. After reading the Hamilton and Lineweaver references, I came away with a much clearer understanding of the foundational role H0 and the phenomena of flat galactic...

Unless there are further postings on this thread, this will likely be my last post here. Any further posts will likely be in a different thread dedicated to the implications of conformal transformations which produce solutions to Maxwell's equations which exhibit evolving wave numbers. I...

Given your interest in GR and questions related to the physical implications of the G(γ) Metric, I thought you might find this paper "The dark energy effect as manifestation of the signal propagation features in expanding Universe" http://arxiv.org/pdf/1102.4995v2.pdf interesting. It...

Since γ operates on x1,2,3,4 , one would suppose that the \Gamma(γ) metric defines a flat space-time. Am I missing something? BTW, the revised version of the paper is now available at arXiv.

I don't believe the paper addresses any aspect of the relationship between the G(γ) transformation and GR. Its not clear to me why the Ricci curvature tensor would be relevant to understanding the behavior of light in a field free space-time. The relevance of conformal transformations as a...

Thanks for the reply. Its been a while since I posted so I'm going to kludge my way through a response here. Per your comments: "a general function which multiplies the entire metric neatly factors out of any coordinate-free measurements. That is to say, a function multiplying the entire...