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The twin paradox revisited
Martin Hogbin wrote:
wrote in message ups.com... When I previously had access to the internet about ten years ago I expressed interest in this topic and was informed that a space traveller does not physically age at a slower rate but that his earth- bound twin physically ages at a faster rate and only during the period of acceleration following turn around. Is this idea still in vogue? Has it been published in any peer reviewed journal? I do not quite understand your question but there is only one theory of space and time that has been taught and used by physicists throughout the world for nearly a century and that is Einstein's theory of relativity. Various aspects of relativity have, of course, been published in peer-reviewed journals and the theory is completely accepted. The only dissent is in places like this newsgroup where any crackpot is free to post. According to relativity, the earthbound twin will be found to have aged more than the travelling twin when they meet up again. How the aging of each twin is measured by the other twin during the journey is described in many places and web sites. If you are interested I will try to find one for you. Try to find places where hypnotists in Einstein criminal cult say the greater youthfulness of the travelling twin is due to the acceleration he undergoes and places where other (or even the same) hypnotists say the greater youthfulness of the travelling twin has nothing to do with the acceleration. You may even find a place where a hypnotist say both truths simultaneously. Pentcho Valev |
#2
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The twin paradox revisited
"Pentcho Valev" wrote in message ups.com... : Martin Hogbin wrote: : wrote in message ups.com... : When I previously had access to the internet about ten years ago I : expressed interest in this topic and was informed that a space : traveller does not physically age at a slower rate but that his earth- : bound twin physically ages at a faster rate and only during the period : of acceleration following turn around. : : Is this idea still in vogue? Has it been published in any peer : reviewed journal? : : I do not quite understand your question but there is only : one theory of space and time that has been taught and : used by physicists throughout the world for nearly a : century and that is Einstein's theory of relativity. : : Various aspects of relativity have, of course, been : published in peer-reviewed journals and the theory is : completely accepted. The only dissent is in places : like this newsgroup where any crackpot is free to post. : : According to relativity, the earthbound twin will be : found to have aged more than the travelling twin when : they meet up again. How the aging of each twin is : measured by the other twin during the journey is : described in many places and web sites. If you are : interested I will try to find one for you. : : Try to find places where hypnotists in Einstein criminal cult say the : greater youthfulness of the travelling twin is due to the acceleration : he undergoes and places where other (or even the same) hypnotists say : the greater youthfulness of the travelling twin has nothing to do with : the acceleration. You may even find a place where a hypnotist say both : truths simultaneously. : Are you sure it's hypnotism and not lobotomy? |
#3
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The twin paradox revisited
Androcles wrote: "Pentcho Valev" wrote in message ups.com... : Martin Hogbin wrote: : wrote in message ups.com... : When I previously had access to the internet about ten years ago I : expressed interest in this topic and was informed that a space : traveller does not physically age at a slower rate but that his earth- : bound twin physically ages at a faster rate and only during the period : of acceleration following turn around. : : Is this idea still in vogue? Has it been published in any peer : reviewed journal? : : I do not quite understand your question but there is only : one theory of space and time that has been taught and : used by physicists throughout the world for nearly a : century and that is Einstein's theory of relativity. : : Various aspects of relativity have, of course, been : published in peer-reviewed journals and the theory is : completely accepted. The only dissent is in places : like this newsgroup where any crackpot is free to post. : : According to relativity, the earthbound twin will be : found to have aged more than the travelling twin when : they meet up again. How the aging of each twin is : measured by the other twin during the journey is : described in many places and web sites. If you are : interested I will try to find one for you. : : Try to find places where hypnotists in Einstein criminal cult say the : greater youthfulness of the travelling twin is due to the acceleration : he undergoes and places where other (or even the same) hypnotists say : the greater youthfulness of the travelling twin has nothing to do with : the acceleration. You may even find a place where a hypnotist say both : truths simultaneously. : Are you sure it's hypnotism and not lobotomy? No. Pentcho Valev |
#4
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The twin paradox revisited
Pentcho Valev wrote: Androcles wrote: "Pentcho Valev" wrote in message ups.com... : Martin Hogbin wrote: : wrote in message ups.com... : When I previously had access to the internet about ten years ago I : expressed interest in this topic and was informed that a space : traveller does not physically age at a slower rate but that his earth- : bound twin physically ages at a faster rate and only during the period : of acceleration following turn around. : : Is this idea still in vogue? Has it been published in any peer : reviewed journal? : : I do not quite understand your question but there is only : one theory of space and time that has been taught and : used by physicists throughout the world for nearly a : century and that is Einstein's theory of relativity. : : Various aspects of relativity have, of course, been : published in peer-reviewed journals and the theory is : completely accepted. The only dissent is in places : like this newsgroup where any crackpot is free to post. : : According to relativity, the earthbound twin will be : found to have aged more than the travelling twin when : they meet up again. How the aging of each twin is : measured by the other twin during the journey is : described in many places and web sites. If you are : interested I will try to find one for you. : : Try to find places where hypnotists in Einstein criminal cult say the : greater youthfulness of the travelling twin is due to the acceleration : he undergoes and places where other (or even the same) hypnotists say : the greater youthfulness of the travelling twin has nothing to do with : the acceleration. You may even find a place where a hypnotist say both : truths simultaneously. : Are you sure it's hypnotism and not lobotomy? No. By the way, guess who is the Albert Einstein of our generation teaching both truths simultaneously (I am still not sure whether it is hypnotism or lobotomy): A 2004 discussion in sci.physics.relativity: http://groups.google.ca/group/sci.ph...c3061f6a083e6? Pentcho Valev wrote: The following three statements can be found in relativists' texts: Tom Roberts: The problem with your first two statements is they are not specified precisely enough to have a definite answer. 1. The travelling twin is younger because he undergoes acceleration. Tom Roberts: Well, sort of. A better way of stating this is that the traveling twin is younger because he did not follow a geodesic path while her inertial twin did. But a necessary ingredient of his following a non-geodesic path is that he accelerates somewhere. The point is, the elapsed proper time of a path is an integral over the PATH, not the acceleration. One can arrange a situation for 2 clocks which follow trajectories that periodically meet, in which the clock with the larger proper acceleration also has the larger elapsed proper time betwen meetings. 2. The acceleration can be neglected and yet calculations based on uniform motion show that the travelling twin is younger. Tom Roberts: I'm not sure what you mean by "the acceleration can be neglected". I'm guessing that you mean the "3-clock approach", in which the "traveling twin" is replaced by two inertial clocks that meet at his nominal turning point, and the time is transferred when they meet -- one clock is his outbound trip and the second is his return trip. This way there is no acceleration, but one time measurement takes an out-and-back trip and the other measurement remains at home (in an inertial frame). Yes, for that 3-clock approach the traveling 2 clocks show a total elapsed proper time less than the inertial clock. The point is, the elapsed proper time of a path is an integral over the PATH, not the acceleration. 3. Special relativity cannot resolve the twin paradox - only general relativity can. Tom Roberts: This was thought to be true a long time ago, by Einstein and others. It is now known to be false. SR can be used to compute any measurement in this situation, because it occurs in Minkowski spacetime (i.e. there is no curvature present). ________________________________ [end of the 2004 discussion] Pentcho Valev |
#5
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The twin paradox revisited
"Pentcho Valev" wrote in message oups.com... : : Androcles wrote: : "Pentcho Valev" wrote in message : ups.com... : : Martin Hogbin wrote: : : wrote in message : ups.com... : : When I previously had access to the internet about ten years ago I : : expressed interest in this topic and was informed that a space : : traveller does not physically age at a slower rate but that his earth- : : bound twin physically ages at a faster rate and only during the period : : of acceleration following turn around. : : : : Is this idea still in vogue? Has it been published in any peer : : reviewed journal? : : : : I do not quite understand your question but there is only : : one theory of space and time that has been taught and : : used by physicists throughout the world for nearly a : : century and that is Einstein's theory of relativity. : : : : Various aspects of relativity have, of course, been : : published in peer-reviewed journals and the theory is : : completely accepted. The only dissent is in places : : like this newsgroup where any crackpot is free to post. : : : : According to relativity, the earthbound twin will be : : found to have aged more than the travelling twin when : : they meet up again. How the aging of each twin is : : measured by the other twin during the journey is : : described in many places and web sites. If you are : : interested I will try to find one for you. : : : : Try to find places where hypnotists in Einstein criminal cult say the : : greater youthfulness of the travelling twin is due to the acceleration : : he undergoes and places where other (or even the same) hypnotists say : : the greater youthfulness of the travelling twin has nothing to do with : : the acceleration. You may even find a place where a hypnotist say both : : truths simultaneously. : : : Are you sure it's hypnotism and not lobotomy? : : No. : : Pentcho Valev Know what you mean. I'm still uncertain whether Einstein was an extremely cunning and clever charlatan or a raving loonie. "Idiot savant" comes to mind. |
#6
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The twin paradox revisited
"Androcles" wrote in message .. . "Pentcho Valev" wrote in message oups.com... : : Androcles wrote: : : : Are you sure it's hypnotism and not lobotomy? : : No. : : Pentcho Valev Know what you mean. I'm still uncertain whether Einstein was an extremely cunning and clever charlatan or a raving loonie. "Idiot savant" comes to mind. Looks like you have found a friend, Androcles. -- Martin Hogbin |
#7
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The twin paradox revisited
"Martin Hogbin" wrote in message ... : : "Androcles" wrote in message .. . : : "Pentcho Valev" wrote in message : oups.com... : : : : Androcles wrote: : : : : : Are you sure it's hypnotism and not lobotomy? : : : : No. : : : : Pentcho Valev : : Know what you mean. I'm still uncertain whether Einstein : was an extremely cunning and clever charlatan or a raving loonie. : "Idiot savant" comes to mind. : : Looks like you have found a friend, Androcles. Looks like the straw is bent and broken, Pigbin. http://www.androcles01.pwp.blueyonde...lgol/straw.gif Looks like you are a moron, Pigbin, but then, looks can sometimes be deceptive. Not so in your case, though. All you Einstein Dingleberry cranks rely on "looks like", "seems like", "could be", "might be" for argument and never offer a shred of proof of what IS. |
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