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Dishonest Cosmologists, Honest Einsteinians?



 
 
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  #1  
Old January 9th 16, 01:06 PM posted to sci.astro
Pentcho Valev
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Default Dishonest Cosmologists, Honest Einsteinians?

http://theconversation.com/cosmology...ay-think-52349
"Cosmology is in crisis - but not for the reason you may think"

The whole paper is a euphemism for "Cosmologists lie blatantly". How about Einsteinans (if they are different from cosmologists)? Are today's Einsteinians still as honest as Arthur Eddington and Walter Adams in 1925?

http://preterism.ning.com/forum/topi...trust-the-data
"Consider the case of astronomer Walter Adams. In 1925 he tested Einstein's theory of relativity by measuring the red shift of the binary companion of Sirius, brightest star in the sky. Einstein's theory predicted a red shift of six parts in a hundred thousand; Adams found just such an effect. A triumph for relativity. However, in 1971, with updated estimates of the mass and radius of Sirius, it was found that the predicted red shift should have been much larger - 28 parts in a hundred thousand. Later observations of the red shift did indeed measure this amount, showing that Adams' observations were flawed. He "saw" what he had expected to see."

http://adsabs.harvard.edu/abs/2010AAS...21530404H
"In January 1924 Arthur Eddington wrote to Walter S. Adams at the Mt. Wilson Observatory suggesting a measurement of the "Einstein shift" in Sirius B and providing an estimate of its magnitude. Adams' 1925 published results agreed remarkably well with Eddington's estimate. Initially this achievement was hailed as the third empirical test of General Relativity (after Mercury's anomalous perihelion advance and the 1919 measurement of the deflection of starlight). It has been known for some time that both Eddington's estimate and Adams' measurement underestimated the true Sirius B gravitational redshift by a factor of four."

http://adsabs.harvard.edu/full/1980QJRAS..21..246H
"...Eddington asked Adams to attempt the measurement. (...) ...Adams reported an average differential redshift of nineteen kilometers per second, very nearly the predicted gravitational redshift. Eddington was delighted with the result... (...) In 1928 Joseph Moore at the Lick Observatory measured differences between the redshifts of Sirius and Sirius B... (...) ...the average was nineteen kilometers per second, precisely what Adams had reported.. (...) More seriously damaging to the reputation of Adams and Moore is the measurement in the 1960s at Mount Wilson by Jesse Greenstein, J.Oke, and H..Shipman. They found a differential redshift for Sirius B of roughly eighty kilometers per second."

http://irfu.cea.fr/Phocea/file.php?f...TE-052-456.pdf
Jean-Marc Bonnet-Bidaud: "Autour de l'étoile brillante Sirius, on découvre une petite étoile, Sirius B, à la fois très chaude et très faiblement lumineuse. Pour expliquer ces deux particularités, il faut supposer que l'étoile est aussi massive que le Soleil et aussi petite qu'une planète comme la Terre. C'est Eddington lui-même qui aboutit à cette conclusion dont il voit vite l'intérêt : avec de telles caractéristiques, ces naines blanches sont extrêmement denses et leur gravité très puissante. Le décalage vers le rouge de la gravitation est donc 100 fois plus élevé que sur le Soleil. Une occasion inespérée pour mesurer enfin quelque chose d'appréciable. Eddington s'adresse aussitôt à Walter Adams, directeur de l'observatoire du mont Wilson, en Californie, afin que le télescope de 2,5 m de diamètre Hooker entreprenne les vérifications. Selon ses estimations, basées sur une température de 8 000 degrés de Sirius B, mesurée par Adams lui-même, le décalage vers le rouge prédit par la relativité, en s'élevant à 20 km/s, devrait être facilement mesurable. Adams mobilise d'urgence le grand télescope et expose 28 plaques photographiques pour réaliser la mesure. Son rapport, publié le 18 mai 1925, est très confus car il mesure des vitesses allant de 2 à 33 km/s. Mais, par le jeu de corrections arbitraires dont personne ne comprendra jamais la logique, le décalage passe finalement à 21 km/s, plus tard corrigé à 19 km/s, et Eddington de conclure : "Les résultats peuvent être considérés comme fournissant une preuve directe de la validité du troisième test de la théorie de la relativité générale." Adams et Eddington se congratulent, ils viennent encore de "prouver" Einstein. Ce résultat, pourtant faux, ne sera pas remis en cause avant 1971. Manque de chance effectivement, la première mesure de température de Sirius B était largement inexacte : au lieu des 8 000 degrés envisagés par Eddington, l'étoile fait en réalité près de 30 000 degrés. Elle est donc beaucoup plus petite, sa gravité est plus intense et le décalage vers le rouge mesurable est de 89 km/s. C'est ce qu'aurait dû trouver Adams sur ses plaques s'il n'avait pas été "influencé" par le calcul erroné d'Eddington. L'écart est tellement flagrant que la suspicion de fraude a bien été envisagée."

Pentcho Valev
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  #2  
Old January 12th 16, 01:30 AM posted to sci.astro
Pentcho Valev
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Posts: 7,497
Default Dishonest Cosmologists, Honest Einsteinians?

http://gizmodo.com/rumors-are-flying...vit-1752259868
"Rumors Are Flying That We Finally Found Gravitational Waves"

The new fraud? So soon? Einsteinians must be quite desperate.

Pentcho Valev
  #3  
Old January 12th 16, 11:21 AM posted to sci.astro
Pentcho Valev
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Posts: 7,497
Default Dishonest Cosmologists, Honest Einsteinians?

The lie:

https://news.cnrs.fr/articles/do-bla...s-distort-time
"It wasn't until 1959 that two researchers at Harvard University, Robert V.. Pound and Glen A. Rebka, provided the first empirical corroboration of the phenomenon of time dilation through a ground-based experiment. Further confirmation came in 1976, when the Gravity Probe A spacecraft, carrying an ultra-accurate atomic clock, was launched into space to an altitude of 10,000 kilometers. The data showed that, for the instrument, time had speeded up--by approximately 40 microseconds per day at its most distant point--compared with a stationary clock back on Earth. This effect also had to be taken into account when using geo-positioning systems such as GPS, which are based on the comparison of time-series data provided by atomic clocks on board a constellation of satellites."

The truth:

http://www.einstein-online.info/spot...t_white_dwarfs
Albert Einstein Institute: "One of the three classical tests for general relativity is the gravitational redshift of light or other forms of electromagnetic radiation. However, in contrast to the other two tests - the gravitational deflection of light and the relativistic perihelion shift -, you do not need general relativity to derive the correct prediction for the gravitational redshift. A combination of Newtonian gravity, a particle theory of light, and the weak equivalence principle (gravitating mass equals inertial mass) suffices. (...) The gravitational redshift was first measured on earth in 1960-65 by Pound, Rebka, and Snider at Harvard University..."

Pentcho Valev

 




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