[General] Velocity of gravitation

Tue Feb 12 09:19:10 PST 2019

 de Sangro, et al., 2012, {\it{Measuring Propagation Speed of Coulomb Fields}}, Measuring Propagation Speed of Coulomb Fields 

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Measuring Propagation Speed of Coulomb Fields

The problem of gravity propagation has been subject of discussion for quite a long time: Newton, Laplace and, in...
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Hodge
    On Tuesday, February 12, 2019, 11:58:03 AM EST, Albrecht Giese <phys at a-giese.de> wrote:  

Hi Chip,

I have found a paper from S. Carlip which is published in a publication of CERN. You can find it via the link

http://cds.cern.ch/record/401893/files/9909087.pdf

This paper also refers to the paper of van Flandern. The paper of Carlip presents a velocity dependent component of the force vector. This is deduced for the electric field by Maxwell's equations and special relativity (which essentially means the same). For the gravitational field by the use of general relativity. - This velocity dependent component can also be understood by imagination if we understand a field as a stream of exchange particles. This latter case is easily understandable if we are willing to accept an ether as a medium. Because for the propagation in an ether there is generally no aberration.

BTW: Einstein has once stated that the existence of aberration of light (as visible in astronomy) was for him the most convincing fact for rejecting an ether. This was at a time when Einstein did not accept light to be a stream of photons. For the latter case there is no conflict between an ether and aberration of light (as particles).

Thank you, Oliver Consa, for the literature. And thank you, Al Kracklauer, for your comment, I shall come back to it.

Albrecht

 Am 12.02.2019 um 12:34 schrieb Chip Akins:

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Hi Albrecht

I find this very interesting. Where can I get more information and data about the non-aberration of the electric field? Are there papers and publications you recommend?

Chip Akins

From: General[mailto:general-bounces+chipakins=gmail.com at lists.natureoflightandparticles.org] On Behalf Of Albrecht Giese
 Sent: Monday, February 11, 2019 2:18 PM
 To: 'Nature of Light and Particles - General Discussion' <general at lists.natureoflightandparticles.org>; Wolfgang Baer <wolf at nascentinc.com>
 Subject: [General] Velocity of gravitation

Hi Wolf, hi All, 

some time ago we had a discussion here about gravity. In particular about the question whether the propagation speed of the gravitational field is c or infinite. The problem behind is the fact that a finite propagation speed of gravity should cause rotating pairs of stars to permanently increase their speed, because the other star appears at a retarded position and so the force between the stars should have a tangential component. Our discussion ended at that time with  the result that the Liénard-Wiechert potential would solve the problem.

This was not very satisfying because the Liénard-Wiechert formalism is only about the field at a retarded time, and this description by itself does not solve this problem. I found that the solution is a completely different phenomenon. It is the fact (and as such well known in the physical literature) that fields like the electric field and also the gravitational field (our case) never show aberration. This is – according to literature – a well-known fact which is also theoretically well understood. But most are not aware of it, like me. 

Experimentally it can in the case of the electrical field be proven in the laboratory. And the motion of stars show it for the gravitational case. 

Do you feel that this helps?

Albrecht

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