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München 2009 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 10: Poster

GR 10.2: Poster

Thursday, March 12, 2009, 12:25–12:34, Dekanatsgang

Is the Speed of Light ’c’ a True Constant? — •Albrecht Giese — Taxusweg 15, 22605 Hamburg

Einstein has - in his structure-based theory of relativity - stated that the speed of light ’c’ is a true constant under all circumstances. The physical community has accepted this in spite of the problems arising from this paradigm; see the deadlock situation of present physics (e.g. Quantum Gravity).

The constancy of the speed of light has 3 aspects:

1.) Is ’c’ the same for an observer in motion or at rest?

Einstein says: YES – Lorentz says: NO; only the >measured< ’c’ is constant resulting from the contraction of measuring rods and the de-synchronization of clocks during motion.

2.) Is ’c’ the same inside and outside a gravitational field?

Einstein says: YES – We say: NO; ’c’ is reduced in a gravitational field as the direct measurement tells us; the apparent curvature of space is in truth a refraction effect caused by the variation of ’c’

3.) Was ’c’ a constant during the development of the universe?

Einstein says: YES – Magueijo says: NO; if we accept an (adapting) decrease of ’c’, we can avoid the inflation in cosmology and the landscape of 10100 universes.

Note that the alternative approaches mentioned above yield the same mathematical results as the traditional version of Einstein, to the extent as they are confirmed by experiments.

Further information: www.ag-physics.org/relat and /gravity

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