Comments on: Relativity: Measuring the speed of light http://skullsinthestars.com/2008/03/21/relativity-measuring-the-speed-of-light/ Physics, pulp fantasy and horror fiction, and a bit of politics Sun, 11 May 2008 00:01:35 +0000 http://wordpress.org/?v=MU By: Uncle Al http://skullsinthestars.com/2008/03/21/relativity-measuring-the-speed-of-light/#comment-1008 Uncle Al Mon, 24 Mar 2008 16:09:09 +0000 http://skullsinthestars.wordpress.com/?p=267#comment-1008 One loophole remains. General Relativity and string theory assume isotropic vacuum and the Equivalence Principle (all local centers of mass vacuum free fall identically regardless of composition, hydrogen atoms to neutron stars). Teleparallel gravitation wholly contains GR without isotropic vacuum or the EP. GR might <I>detectably</I> fail in the massed sector (but not in massless electromagetism). Do chemically identical left and right shoes fall identically? Teleparallel theory says "no." Spacetime torsion (replacing curvature) transforms like the Lorentz force in EM - it is chiral, a left foot. Left and right shoes fit differently. They have divergent minimum action vacuum free fall trajectories. An Eötvös balance tests the EP to 3x10^(-14) difference/average, http://www.npl.washington.edu/eotwash/experiments/equivalencePrinciple/epWhat.html http://www.npl.washington.edu/eotwash/publications/pdf/schlamminger08.pdf Composition, Phys. Rev. Lett. 100 041101 (2008) http://www.npl.washington.edu/eotwash/publications/pdf/prl97-021603.pdf Polarized angular momenta, Phys. Rev. Lett. 97 021603 (2006) Single crystal test masses of space group P3(1)21 alpha-quartz (right-handed crew axes) opposed by space group P3(2)21 alpha-quartz (left-handed crew axes) could deeply change physics. Somebody should look. One loophole remains. General Relativity and string theory assume isotropic vacuum and the Equivalence Principle (all local centers of mass vacuum free fall identically regardless of composition, hydrogen atoms to neutron stars). Teleparallel gravitation wholly contains GR without isotropic vacuum or the EP. GR might detectably fail in the massed sector (but not in massless electromagetism).

Do chemically identical left and right shoes fall identically? Teleparallel theory says “no.” Spacetime torsion (replacing curvature) transforms like the Lorentz force in EM - it is chiral, a left foot. Left and right shoes fit differently. They have divergent minimum action vacuum free fall trajectories.

An Eötvös balance tests the EP to 3×10^(-14) difference/average,

http://www.npl.washington.edu/eotwash/experiments/equivalencePrinciple/epWhat.html
http://www.npl.washington.edu/eotwash/publications/pdf/schlamminger08.pdf
Composition, Phys. Rev. Lett. 100 041101 (200 8)
http://www.npl.washington.edu/eotwash/publications/pdf/prl97-021603.pdf
Polarized angular momenta, Phys. Rev. Lett. 97 021603 (2006)

Single crystal test masses of space group P3(1)21 alpha-quartz (right-handed crew axes) opposed by space group P3(2)21 alpha-quartz (left-handed crew axes) could deeply change physics. Somebody should look.

]]> By: skullsinthestars http://skullsinthestars.com/2008/03/21/relativity-measuring-the-speed-of-light/#comment-1003 skullsinthestars Sun, 23 Mar 2008 23:34:26 +0000 http://skullsinthestars.wordpress.com/?p=267#comment-1003 Uncle Al: Thanks for the link; very nice! In my desire to cover only those experiments which led up to Einstein, I neglected to mention that the M-M experiment has been repeated numerous times with increasing resolution. I mentioned the most controversial of these, the work of <a href="http://skullsinthestars.com/2007/10/19/an-interesting-intersection-of-lovecraft-and-relativity-theory/" rel="nofollow">Dayton Miller</a>, in a much earlier post. Uncle Al: Thanks for the link; very nice! In my desire to cover only those experiments which led up to Einstein, I neglected to mention that the M-M experiment has been repeated numerous times with increasing resolution. I mentioned the most controversial of these, the work of Dayton Miller, in a much earlier post.

]]> By: Alejandro Rivero http://skullsinthestars.com/2008/03/21/relativity-measuring-the-speed-of-light/#comment-1002 Alejandro Rivero Sun, 23 Mar 2008 21:18:29 +0000 http://skullsinthestars.wordpress.com/?p=267#comment-1002 Check this for an actual application of light pulses: http://www.3dvsystems.com/ Check this for an actual application of light pulses:
http://www.3dvsystems.com/

]]> By: Uncle Al http://skullsinthestars.com/2008/03/21/relativity-measuring-the-speed-of-light/#comment-1001 Uncle Al Sun, 23 Mar 2008 20:47:39 +0000 http://skullsinthestars.wordpress.com/?p=267#comment-1001 http://arXiv.org/abs/0706.2031 Michelson-Morley in 1887 nulled to 10^(-8) relative. Here it nulls to 10^(-16) relative. Optical in Berlin, Germany at 52°31'N 13°20'E and microwave in Perth, Australia at 31°53'S 115°53E. An aether background could never be at rest relative to both of them. No dichroism vs. frequency, either. http://arXiv.org/abs/0706.2031

Michelson-Morley in 1887 nulled to 10^(- 8) relative. Here it nulls to 10^(-16) relative. Optical in Berlin, Germany at 52°31′N 13°20′E and microwave in Perth, Australia at 31°53′S 115°53E. An aether background could never be at rest relative to both of them. No dichroism vs. frequency, either.

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