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Pentcho Valev

Posts: 6,212
Registered: 12/13/04
Posted: Dec 28, 2012 1:24 PM
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"La lumière fatiguée est une théorie proposée par Albert Einstein pour réconcilier son hypothèse d'univers statique avec l'observation de l'expansion de l'Univers. Cette dernière étant déduite de l'observation d'un décalage vers le rouge proportionnel à la distance pour les galaxies, cette idée a été également préconisée par Fritz Zwicky en 1929 comme explication alternative possible. L'expression a été inventée d'après Richard Tolman comme une interprétation alternative de Georges Lemaître et d'Edwin Hubble de décalage vers le rouge cosmique. Lemaître et Hubble crurent que le décalage rouge cosmique était provoqué par l'étirement des ondes lumineuses lors de leur voyage dans l'espace en expansion. Fritz Zwicky a cru que le décalage rouge cosmique était causé par des photons perdant graduellement l'énergie au fil de la distance..."

Hubble ne croyait ni à l'expansion de l'Univers ni à "l'étirement des ondes lumineuses lors de leur voyage dans l'espace en expansion":
Astrophys Space Sci (2009) 323: 205211, Misconceptions about the Hubble recession law, Wilfred H. Sorrell: "Reber (1982) made the interesting point that Edwin Hubble was not a promoter of the expanding universe idea. Some personal communications from Hubble reveal that he thought a model universe based upon the tired-light hypothesis is more simple and less irrational than a model universe based upon an expanding space-time geometry."
"In 1929, when spectral analysis revealed a 'red shift' in distant galaxies, astronomer Edwin Hubble speculated that this might be due to acceleration away from Earth and a possible expanding universe. Before he could reflect on other possible explanations, a radio interview stumbled onto the phrase "Big Bang" and a run-away train left the station. Dr Hubble was uncomfortable with both the concept and the catchy nick-name, but he had a 'conflict of interest' on this issue. In a Times magazine interview, on Dec 14, 1936, titled "Science: Shift on Shift", Dr. Hubble made his opposition clear. One reason that he was not more forceful was because he was begging the government for funding of the Mount Palomar telescope.",9171,757145,00.html
Monday, Dec. 14, 1936: "Other causes for the redshift were suggested, such as cosmic dust or a change in the nature of light over great stretches of space. Two years ago Dr. Hubble admitted that the expanding universe might be an illusion, but implied that this was a cautious and colorless view. Last week it was apparent that he had shifted his position even further away from a literal interpretation of the redshift, that he now regards the expanding universe as more improbable than a non-expanding one."
Edwin Hubble, Observational Approach to Cosmology, Oxford 1937: "Avant tout, si le redshift nest pas dû à une vitesse de déplacement, le tableau est simple et plausible. Il n'y a aucune preuve d'expansion, ni de limitation de l'échelle de temps, aucune trace de courbure spatiale, et rien ne limite les dimensions de l'espace."

Pentcho Valev

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