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Psychotic Humpty Roberts places foot in mouth (again).
"Dirk Van de moortel" wrote in message news:... "Randy Poe" wrote in message ups.com... On Apr 29, 10:53 am, "Androcles" wrote: "Nonsense. GR obtains essentially the same answer as Newtonian mechanics for this physical situation. The difference is far below measurement accuracy." -- Humpty Roberts ) For the advance of perihelion of Mercury, predicted by Newtonian Mechanics to within 43 arc seconds per century (= 415 orbits) which is 415 orbits * 360 degrees = 149400 degrees 149400 degrees * 60 arc minutes = 8964000 arc minutes 8964000 arc minutes * 60 arc seconds = 537840000 arc seconds. 43 -------------------------------- x 100 = 0.00000799494273389855719% 537840000 The difference is far below ANY measurement accuracy. Einstein with his 4-figure log tables and 3-figure sliderule could not be that accurate and was not an astronomer. I am very excited to announce I just located an online copy of the 1859 article in which Urbain le Verrier first famously announced that observations of Mercury were not consistent with Newtonian predictions. The paper is called "Theorie du Mouvement de Mercure", is in French, and is some 195 pages long. I am looking for the part dealing with observational accuracy right now, but I am a slow reader in French and it will take a while to locate. Can you post the pointer to the online copy please? TIA! Nver mind :-) Got it with google http://www.google.com/search?q=%22Th...de+Mercure%22+ First hit: http://adsabs.harvard.edu/abs/1859AnPar...5....1L Takes a while to download: 17.6 Mb Dirk Vdm Dirk Vdm |
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Psychotic Humpty Roberts places foot in mouth (again).
On May 3, 2:48 pm, "Dirk Van de moortel" dirkvandemoor...@ThankS-NO-
SperM.hotmail.com wrote: "Dirk Van de moortel" wrote in message news:... "Randy Poe" wrote in oglegroups.com... On Apr 29, 10:53 am, "Androcles" wrote: "Nonsense. GR obtains essentially the same answer as Newtonian mechanics for this physical situation. The difference is far below measurement accuracy." -- Humpty Roberts ) For the advance of perihelion of Mercury, predicted by Newtonian Mechanics to within 43 arc seconds per century (= 415 orbits) which is 415 orbits * 360 degrees = 149400 degrees 149400 degrees * 60 arc minutes = 8964000 arc minutes 8964000 arc minutes * 60 arc seconds = 537840000 arc seconds. 43 -------------------------------- x 100 = 0.00000799494273389855719% 537840000 The difference is far below ANY measurement accuracy. Einstein with his 4-figure log tables and 3-figure sliderule could not be that accurate and was not an astronomer. I am very excited to announce I just located an online copy of the 1859 article in which Urbain le Verrier first famously announced that observations of Mercury were not consistent with Newtonian predictions. The paper is called "Theorie du Mouvement de Mercure", is in French, and is some 195 pages long. I am looking for the part dealing with observational accuracy right now, but I am a slow reader in French and it will take a while to locate. Can you post the pointer to the online copy please? TIA! Nver mind :-) Got it with google http://www.google.com/search?q=%22Th...de+Mercure%22+ First hit: http://adsabs.harvard.edu/abs/1859AnPar...5....1L Takes a while to download: 17.6 Mb Scanning the first section, where he discusses the history of Mercury observations and just how difficult it is to get accurate observations of Mercury since it is always so close to the sun. I admire even more these guys who were able to overcome this kind of difficulty and get these amazing accuracies. The actual perturbation theory appears to be elsewhe "Nous avons, dans le Chapitre XIV (Tome IV, page 3) donné une idée précise de la methode qui a été employée dans le calcul des perturbations..." Chapter XIV is available: http://adsabs.harvard.edu/abs/1858AnPar...4....1L But it in turn refers back to formulas in earlier chapters. This is a monumental work and it's going to take some digging. Fascinating research, though. I'm going to enjoy this. - Randy |
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Psychotic Humpty Roberts places foot in mouth (again).
"Randy Poe" wrote in message oups.com... On May 3, 2:48 pm, "Dirk Van de moortel" dirkvandemoor...@ThankS-NO- SperM.hotmail.com wrote: [snip] Got it with google http://www.google.com/search?q=%22Th...de+Mercure%22+ First hit: http://adsabs.harvard.edu/abs/1859AnPar...5....1L Takes a while to download: 17.6 Mb Scanning the first section, where he discusses the history of Mercury observations and just how difficult it is to get accurate observations of Mercury since it is always so close to the sun. I admire even more these guys who were able to overcome this kind of difficulty and get these amazing accuracies. First section is a pleasant read. The actual perturbation theory appears to be elsewhe "Nous avons, dans le Chapitre XIV (Tome IV, page 3) donné une idée précise de la methode qui a été employée dans le calcul des perturbations..." Chapter XIV is available: http://adsabs.harvard.edu/abs/1858AnPar...4....1L But it in turn refers back to formulas in earlier chapters. This is a monumental work and it's going to take some digging. Fascinating research, though. I'm going to enjoy this. Some digging indeed. Call it a project. Enjoy :-) Dirk Vdm |
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