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#31
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On May 27, 8:54 am, Pentcho Valev wrote:
Dono wrote: On May 27, 8:24 am, Tom Roberts wrote: Dono wrote: On May 26, 9:13 pm, Tom Roberts wrote: But I remark that in GR, for a non-local path [#], on the surface of the earth, the measured 1-way speed of light _is_ different up from down, for any sensible method of synchronizing clocks. [...] This is interesting, much more interesting than all the crackpot stuff that started the discussion. Is the proof easy to derive? Can you do a short writeup? (the math associated with it would be great). Already posted to this newsgroup, long ago (1998):http://groups.google.com/group/sci.p...sg/dd9168f6ec3... (I of course applied the equivalence principle to convert the conclusions of this SR computation to the earth's surface.) That is a computation in SR, in GR one would integrate the metric over the light path. That's more complicated, but for the Schwarzschild manifold and vertical paths it can be done. Somewhere I have a Mathematica notebook with this computation for LIGO detecting sun and moon (unfortunately they have no sensitivity at all for signals of this frequency). The conclusions are essentially the same, but the details differ a bit.... Tom Roberts Thank you! Much appreciated. See something much simpler: http://www.courses.fas.harvard.edu/~...ch13.pdfpp.2-4 What speed of light does the receiver (observer) measure? Let me tell you: the receiver under the tower will measure c'=c(1+V/c^2) whereas the accelerated receiver will measure c'=c+v, where v is the relative speed of the light source and the receiver. if you do not believe me, ask Master Tom Roberts - he may explain in a private message. There is no reason to believe your imbecilities, you are a troll after all. |
#32
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![]() "Dono" wrote in message oups.com... : On May 27, 8:54 am, Pentcho Valev wrote: : Dono wrote: : On May 27, 8:24 am, Tom Roberts wrote: : Dono wrote: : On May 26, 9:13 pm, Tom Roberts wrote: : But I remark that in GR, for a non-local path [#], on the surface of the : earth, the measured 1-way speed of light _is_ different up from down, : for any sensible method of synchronizing clocks. [...] : : This is interesting, much more interesting than all the crackpot stuff : that started the discussion. Is the proof easy to derive? Can you do a : short writeup? (the math associated with it would be great). : : Already posted to this newsgroup, long ago (1998):http://groups.google.com/group/sci.p...sg/dd9168f6ec3... : : (I of course applied the equivalence principle to convert the : conclusions of this SR computation to the earth's surface.) : : That is a computation in SR, in GR one would integrate the metric over : the light path. That's more complicated, but for the Schwarzschild : manifold and vertical paths it can be done. Somewhere I have a : Mathematica notebook with this computation for LIGO detecting sun and : moon (unfortunately they have no sensitivity at all for signals of this : frequency). The conclusions are essentially the same, but the details : differ a bit.... : : Tom Roberts : : Thank you! : Much appreciated. : : See something much simpler: : : http://www.courses.fas.harvard.edu/~...ch13.pdfpp.2-4 : : What speed of light does the receiver (observer) measure? Let me tell : you: the receiver under the tower will measure c'=c(1+V/c^2) whereas : the accelerated receiver will measure c'=c+v, where v is the relative : speed of the light source and the receiver. if you do not believe me, : ask Master Tom Roberts - he may explain in a private message. : : There is no reason to believe your imbecilities, you are a troll after : all. There is no reason to heed you, you are a stupid dumb**** after all. *plonk* |
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On May 27, 2:06 pm, "Androcles" wrote:
"Dono" wrote in message oups.com... : On May 27, 8:54 am, Pentcho Valev wrote:: Dono wrote: : On May 27, 8:24 am, Tom Roberts wrote: : Dono wrote: : On May 26, 9:13 pm, Tom Roberts wrote: : But I remark that in GR, for a non-local path [#], on the surface of the : earth, the measured 1-way speed of light _is_ different up from down, : for any sensible method of synchronizing clocks. [...] : : This is interesting, much more interesting than all the crackpot stuff : that started the discussion. Is the proof easy to derive? Can you do a : short writeup? (the math associated with it would be great). : : Already posted to this newsgroup, long ago (1998):http://groups.google.com/group/sci.p...sg/dd9168f6ec3... : : (I of course applied the equivalence principle to convert the : conclusions of this SR computation to the earth's surface.) : : That is a computation in SR, in GR one would integrate the metric over : the light path. That's more complicated, but for the Schwarzschild : manifold and vertical paths it can be done. Somewhere I have a : Mathematica notebook with this computation for LIGO detecting sun and : moon (unfortunately they have no sensitivity at all for signals of this : frequency). The conclusions are essentially the same, but the details : differ a bit.... : : Tom Roberts : : Thank you! : Much appreciated. : : See something much simpler: : : http://www.courses.fas.harvard.edu/~...ch13.pdfpp.2-4 : : What speed of light does the receiver (observer) measure? Let me tell : you: the receiver under the tower will measure c'=c(1+V/c^2) whereas : the accelerated receiver will measure c'=c+v, where v is the relative : speed of the light source and the receiver. if you do not believe me, : ask Master Tom Roberts - he may explain in a private message. : : There is no reason to believe your imbecilities, you are a troll after : all. There is no reason to heed you, you are a stupid dumb**** after all. *plonk* Sure, go ahead and feel free to go **** yourself, wacko. |
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On May 27, 11:34 am, "Androcles" wrote:
Oh, so gravity is a force, then? Dear or dear, and there was I starting to believe it was a curvature in "spaceTIME", as Humpty Roberts calls it. When the Equivalence Principle applies, the two mean exactly the same thing and are mathematically equivalent descriptions of the very same thing. An equivalence-principle respecting force can ALWAYS be equivalently described via the geodesic law for a curved spacetime and vice versa. This is theory-independent and has nothing, per se, to do with general relativity or anything else. It applies across the board -- even to Newtonian gravity, whose (equivalent and then genrealized) formulation in the language of curved spacetime geometries is the Newton-Cartan spacetimes (ultimately arising from the founder of modern differential geometry, Elie Cartan). It would even apply to Aristotlean physics, if such as were ever to have been defined. |
#35
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![]() wrote in message oups.com... : On May 27, 11:34 am, "Androcles" wrote: : Oh, so gravity is a force, then? : Dear or dear, and there was I starting to believe it was a curvature : in "spaceTIME", as Humpty Roberts calls it. : : When the Equivalence Principle applies, the two mean exactly the same : thing and are mathematically equivalent descriptions of the very same : thing. An equivalence-principle respecting force can ALWAYS be : equivalently described via the geodesic law for a curved spacetime and : vice versa. : This is theory-independent and has nothing, per se, to do with general : relativity or anything else. Listen up, boy. When you ride Einstein's elevator you accelerate. When I sit in my chair at my desk I do not accelerate. That's call the "Difference Principle" or the Principle of Difference. There are no forces in "spacetime", boy. Forces are measured in newtons, not ****ing einsteins or minkowskis, boy. An apple may be equivalent to an orange, having the same mass and radius. The Difference Principle says apples are not oranges, boy, and if you think they are then someone should put you in the stocks and pelt you with rotten fruit until your washed brain gets a little dirt on it and begins to function. Androcles (world famous discoverer of the "Principle of Difference"). |
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On May 27, 8:24 am, Tom Roberts wrote:
Dono wrote: On May 26, 9:13 pm, Tom Roberts wrote: But I remark that in GR, for a non-local path [#], on the surface of the earth, the measured 1-way speed of light _is_ different up from down, for any sensible method of synchronizing clocks. [...] This is interesting, much more interesting than all the crackpot stuff that started the discussion. Is the proof easy to derive? Can you do a short writeup? (the math associated with it would be great). Already posted to this newsgroup, long ago (1998):http://groups.google.com/group/sci.p...sg/dd9168f6ec3... (I of course applied the equivalence principle to convert the conclusions of this SR computation to the earth's surface.) That is a computation in SR, in GR one would integrate the metric over the light path. That's more complicated, but for the Schwarzschild manifold and vertical paths it can be done. Somewhere I have a Mathematica notebook with this computation for LIGO detecting sun and moon (unfortunately they have no sensitivity at all for signals of this frequency). The conclusions are essentially the same, but the details differ a bit.... Tom Roberts Here is another very nice paper that supports your point of view (the anisotropy is non local, when the intervals are reduced to small vicinities, the anisotropy vanishes): http://freeweb.supereva.com/solciclos/sorge_d.pdf |
#37
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Dono wrote:
Here is another very nice paper that supports your point of view (the anisotropy is non local, when the intervals are reduced to small vicinities, the anisotropy vanishes): http://freeweb.supereva.com/solciclos/sorge_d.pdf This is not really a "point of view" that requires "support". This is a well-known aspect of GR. One could find "support" in any GR textbook. Tom Roberts |
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On May 31, 11:10 am, Tom Roberts wrote:
Dono wrote: Here is another very nice paper that supports your point of view (the anisotropy is non local, when the intervals are reduced to small vicinities, the anisotropy vanishes): http://freeweb.supereva.com/solciclos/sorge_d.pdf This is not really a "point of view" that requires "support". This is a well-known aspect of GR. One could find "support" in any GR textbook. Tom Roberts Yes, I know. |
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