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#121
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On May 9, 6:21Â*am, PD wrote:
On May 8, 11:00Â*pm, rbwinn wrote: On May 8, 5:04Â*pm, PD wrote: On May 7, 8:54Â*pm, rbwinn wrote: On May 7, 6:43Â*pm, PD wrote: On May 7, 7:17Â*pm, rbwinn wrote: On May 7, 3:57Â*pm, " wrote: On 7 mayo, 18:38, rbwinn wrote: On May 7, 12:54 pm, " wrote: On 7 mayo, 14:34, rbwinn wrote: On May 7, 10:40�am, " wrote: On 7 mayo, 12:25, rbwinn wrote: On May 7, 8:06 am, PD wrote: Well, no, if lightining strikes the front and rear of a moving train, leaving marks on the train and the track, the marks on the track will be the length of the train apart, which relativity of simultaneity cannot explain. �According to mathematics, if the bolts of lightning are simultaneous in the frame of reference of the track, the marks on the track will be closer together than the length of the train; if the bolts of lightning are simultaneous in the frame of reference of the train, the marks on the track are further apart than the length of the train. �Reality shows that the marks on the track will be the length of the train apart, disproving this false teaching of Einstein. Robert B. Winn Nonsense. That is a bunch of words salad. What in the world those marks you mention have to do with relativity of simultaneity? This shows you have not read anything about SR. What does it mean "according to mathematics"? And where does Einstein say the nonsense of the marks on the track? There are two events (the strikes) and two observers. What these observers see is the light signal information that tells them about the occurrence of those strikes. That is the reason one of them can certify "I saw both strikes to be simultaneous", while the second certify "I saw the front strike occurring before the back strike". Einstein was the one who thought of the train and two bolts of lightning. Â*He did not fully consider the mathematics of the situation he described. Â*Einstein did not say anything about marks on the track, but I did. Â*The marks on the track prove that relativity of simultaneity cannot exist in reality. Â*Lightning hits the front and rear of the train simultaneously as seen by an observer by the track, leaving marks on the front and rear of the train and marks on the railroad track. Â*The distance between the marks on the train is the length of the train. Â*The distance between the marks on the track is the length of the train. Â*In order for relativity of simultaneity to exist, the marks on the track would have to be closer together than the length of the train. Â*Conversely, if the bolts of lightning are seen simultaneously by the observer on the train, in order for relativity of simultaneity to exist, the marks on the track would have to be further apart than the length of the train. Â*Reality shows that the marks on the track are the length of the train apart.. Robert B. Winn That is complete nonsense. What Einstein wrote about this subject, just for people like you, can be seen inhttp://www.bartleby.com/173/9.html Observers do not have to measure any length (actually it would be very tough to measure a 200000km train, not speaking of how to build it and how to place the tracks). The only requirement is for the observers to coincide at t=0 at x=0, that the strikes occurred at x=-X0 and at x= +X0 and that the train with its observer is moving at a speed v into the +x direction. The observations consist of both observers receiving the light signals that communicate them of the strikes occurrence. Where in the world are you seeing something related to measuring lengths? c=176,000 miles /sec. Â*The mile is a unit of length. Â*The velocity of the train is also measured in units of length divided by time. Â*In addition to that, the train has a length that is measured in units of length. Robert B. Winn And what are you trying to say with that?. We are talking about the relativity of simultaneity, and that refers to time relations, not to length contraction. The whole point of this train thought experiment is to prove that time is not absolute. Miguel Rios- Hide quoted text - - Show quoted text - Relativity of simultaneity, as explained by Einstein, is dependent on length contraction. Actually, no it's not. You'll notice that the relativity of simultaneity is established without needing to reference the distance between the marks. However, you brought up the *additional* information about the distance between the marks. In so doing, you find out that there is a *consequence* of relativity of simultaneity: relativity of length. Â*If lightning strikes both ends of a train, leaving marks on the ends of the train and marks on the track, the only way the marks can be closer together than the length of the train, as is required if the lightning at the front strikes first, is if there is a distance contraction, as seen from the frame of reference of the track. Robert B. Winn- Hide quoted text - Well, as I said, that would be the problem of people who believe it exists. Â*I believe the Galilean transformation equations which indicate that relativity of simultaneity and distance contraction do not exist. I know you believe that. That's Â*because you're ignorant of the experimental data, I believe. If you're not interested enough in the truth to investigate the data, then I'm under no compunction to make you change your beliefs. PD Ignorant of experimental dataI Ignorant of experimental data? Â*The only experiment I have to run is posting equations in sci.physics.relativity. Aha. There, you see, is where you make a basic mistake, confusing looking at equations with looking at experimental data. You keep wanting to look at equations, and you shy away from looking at data. You might consider asking a scientist how science is done, Bobby, rather than just playing it the way you want to play it. Â*So, PD, when are you going to tell us about the experiments that disprove the Galilean transformation equations? I already have, Bobby, and I've reminded you about it too. Just because you're still holding the hoop up, Bobby, doesn't mean that I'm going to jump through it again. You can lift a finger too. You have plenty of time to post all of these denials. If you had anything meaningful, you could post it, too. Science has not written anything about the Galilean transformation equations except proofs that the ether theory does not explain the results of the Michelson- Morley experiment. I have already read enough of those. If you have something new, go ahead and tell us what it is. Robert B. Winn |
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#122
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On 9 mayo, 09:30, kenseto wrote:
On May 8, 10:49 am, " wrote: On 8 mayo, 10:27, kenseto wrote: On May 8, 9:53 am, " wrote: On 8 mayo, 09:25, kenseto wrote: On May 7, 5:01 pm, " wrote: On 7 mayo, 16:27, kenseto wrote: On May 7, 3:43 pm, " wrote: On 7 mayo, 15:32, kenseto wrote: On May 7, 11:42 am, " wrote: On 7 mayo, 10:28, rbwinn wrote: On May 7, 6:48�am, YBM wrote: kenseto a �crit : ROTFLOL....you are not responding because you don't have a valid argument. I am not going to respond the rest of your post until you admit that Einstein did stipulate that the lightning strikes occur simultaneously and that: 1. the track observer sees them to be simultaneous because he is not moving wrt the light fronts. 2. the train observer sees them to be not simultaneous because he is moving wrt the light fronts. In SR, "not moving with respect to a light front" makes no sense. I have a question, YBM. Whether you talk about photons or light fronts, in the frame of reference of the train, the light is traveling at a speed of c from the two points where light was emitted in the frame of reference of the train. Those two points remain exactly where they were relative to the frame of reference of the train, and the movement of the track relative to the train changes nothing. How do you get that the observer on the train is moving wrt the light fronts in his frame of reference? Your mistake is treating the points where the information (light) was generated the same as the information. They are quite different! The observer on the train is not moving in his frame of reference. The train is not moving in the frame of reference of the train, and the observer is at the middle of the train the entire time. The two light fronts are moving with a speed of c toward the observer. The track is moving toward the rear of the train. What the track does is irrelevant because the light travels with a speed of c in the frame of reference of the train, regardless of the motion of the source of light. Since the track is moving toward the rear of the train at a speed less than the speed of light, any photons emitted in the frame of reference of the train after the first photons emitted will still reach the observer at the middle of the train after the first ones emitted. The light carrying the information is moving isotropically from the points where it was generated. So the train observer will receive first the front light signal and later the back light signal. This bogus assertion is based on the bogus assumption that the speed of light is anisotropic in the train. Ken Seto What you and Einstein and all other believers in relativity of simultaneity are doing is clinging to some beliefs that pertain to absolute time by making the frame of reference of the track a preferred frame of reference as far as transmission of light is concerned. According to you, the train moves toward the source of light at the front of the train, so that light reaches the observer first. Wrong. The train is not moving in its own frame of reference. The track is moving toward the rear of the train. That is entirely irrelevant as far as when the light will reach the observer at the middle of the train. You scientists have faithfully copied Einstein's mistake for more than 100 years. Don't you think it might be time to think about it? Robert B. Winn Nonsense Miguel Rios- Hide quoted text - - Show quoted text - The only person making bogus assertions here is you. Check your dictionary for the meaning of isotropy. If you do not have one, here is the definition: Isotropy is uniformity in all directions. The word is made up from Greek iso (equal) and tropos (direction). Right....so when Einstein asserted that the train observer rush toward the light front from the front and receding from the light front from the rear he is describing a scenario that destroys the isotropy of the speed of light in the train. So I guess it is you runt of the SRians failed to comprehend this simple fact. Ken Seto On the contrary, light signals from both strokes are precisely isotropically propagating (in a spherical growing at c shape) from their origin, which is exactly what isotropy propagation means. When that sphere finds an eye (either the track or the train observer eyes) the observers will say "hey I have detected a strike!". So how you explain this nonsense of "destroying the isotropy of the speed of light". Do you understand English at all? Hey idiot....do you have reading comprehension problem??? According to Einstein: When the train observer rushes toward the light front from the front the transit time is less for that light front to reach him. When the train observer receding away from the light front from the rear the transit time is more for that light front to reach him. This means that different arrival times for the two light fronts that were generated at the same distance from the train observer and thus what Einstein asserted destroyed the SR postulate that the speed of light is isotropic in the train. Are you too stupid to understand that??????? You are the moron with comprehension problems. What the heck has the transit time to do with the isotropy of the light?. ****ing idiot runt.....isotropy of the speed of light means that light takes the same transit time to reach the observer for the same distance in different directions. Ken Seto Again you have to go back to elementary school and learn to read and write. The information carried by the light signals is moving at c isotropically in both the track and the train frame. The difference in arrival times is not produced by how the light is moving, but because the train observer is moving relatively to the light signals. What drugs are you taken that make you think you know something about physics? You have provided substantial evidence that you do not have the slightest idea of what you are talking, like your famous and hilarious theory about the Sodium. Miguel Rios- Hide quoted text - - Show quoted text - ****ing idiot moron.....the observer *moved* after the light signals started their voyage towards the observer. Hey ****ing idiot runt....This shows me that you don't know what isotropic means. The SR postulates says that the speed of light is isotropic in the observer's frame. In case you are too stupid to understand that means that the observer doesn't move wrt different light fronts from the same distance in different directions. You are so ****ing stupid I suggest that you go off to a corner and commit suicide. Ken Seto Miguel Rios- Hide quoted text - - Show quoted text - You know ****o, it is you who is showing and proving day after day the kind of retarded person you are. You don't know what isotropy means, even if the meaning of the word is provided to you. Then you are so moronic as to say that "the observer doesn't move wrt different light fronts from the same distance in different directions" is implied by the isotropy of light. Do you understand the phrase "isotropy of light"? Do you see anywhere in that phrase the word observer? Don't you understand that the track observer and the train observer were at the same location only when t=t'=0, but then the train observer moved to another location? Don't you understand that isotropy of light means that light propagates in a spherical front with center in the point where the event generated the light? Don't you understand that the light propagation speed, according to the second SR postulate, does not depend on the velocity the source of the light had when the light was produced? Don't you understand that the location of the train observer, in the middle of the train, is not correlated with the light signal, since that light signal is moving at c with respect to its original source, source which, by the way, was and still is located at the same distance from the track observer? Don't you understand that since the lightning strokes occurred at the same distance from the track observer, and for that very same reason the track observer saw them as simultaneous, then as the light front are propagating from their source locations and as the train with its observer has moved it is impossible for the train observer to get those signals as simultaneous? Well it is obvious that we can write and write and show you references and you will not understand, just because you do not have a brain able of understanding. You are only good for insulting people, people like myself that has studied these subjects for more than 40 years. Go away you ignorant runt Miguel Rios |
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#123
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#124
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On May 9, 10:35Â*am, " wrote:
On 9 mayo, 09:30, kenseto wrote: On May 8, 10:49 am, " wrote: On 8 mayo, 10:27, kenseto wrote: On May 8, 9:53 am, " wrote: On 8 mayo, 09:25, kenseto wrote: On May 7, 5:01 pm, " wrote: On 7 mayo, 16:27, kenseto wrote: On May 7, 3:43 pm, " wrote: On 7 mayo, 15:32, kenseto wrote: On May 7, 11:42 am, " wrote: On 7 mayo, 10:28, rbwinn wrote: On May 7, 6:48�am, YBM wrote: kenseto a �crit : ROTFLOL....you are not responding because you don't have a valid argument. I am not going to respond the rest of your post until you admit that Einstein did stipulate that the lightning strikes occur simultaneously and that: 1. the track observer sees them to be simultaneous because he is not moving wrt the light fronts. 2. the train observer sees them to be not simultaneous because he is moving wrt the light fronts. In SR, "not moving with respect to a light front" makes no sense. I have a question, YBM. Â*Whether you talk about photons or light fronts, in the frame of reference of the train, the light is traveling at a speed of c from the two points where light was emitted in the frame of reference of the train. Â*Those two points remain exactly where they were relative to the frame of reference of the train, and the movement of the track relative to the train changes nothing. Â*How do you get that the observer on the train is moving wrt the light fronts in his frame of reference? Your mistake is treating the points where the information (light) was generated the same as the information. They are quite different! Â* Â* The observer on the train is not moving in his frame of reference. Â*The train is not moving in the frame of reference of the train, and the observer is at the middle of the train the entire time. Â*The two light fronts are moving with a speed of c toward the observer. Â*The track is moving toward the rear of the train. Â*What the track does is irrelevant because the light travels with a speed of c in the frame of reference of the train, regardless of the motion of the source of light. Â*Since the track is moving toward the rear of the train at a speed less than the speed of light, any photons emitted in the frame of reference of the train after the first photons emitted will still reach the observer at the middle of the train after the first ones emitted. The light carrying the information is moving isotropically from the points where it was generated. So the train observer will receive first the front light signal and later the back light signal. This bogus assertion is based on the bogus assumption that the speed of light is anisotropic in the train. Ken Seto Â* Â* Â*What you and Einstein and all other believers in relativity of simultaneity are doing is clinging to some beliefs that pertain to absolute time by making the frame of reference of the track a preferred frame of reference as far as transmission of light is concerned. Â*According to you, the train moves toward the source of light at the front of the train, so that light reaches the observer first. Â*Wrong. Â*The train is not moving in its own frame of reference. Â*The track is moving toward the rear of the train. Â*That is entirely irrelevant as far as when the light will reach the observer at the middle of the train. Â*You scientists have faithfully copied Einstein's mistake for more than 100 years. Â*Don't you think it might be time to think about it? Robert B. Winn Nonsense Miguel Rios- Hide quoted text - - Show quoted text - The only person making bogus assertions here is you. Check your dictionary for the meaning of isotropy. If you do not have one, here is the definition: Isotropy is uniformity in all directions. The word is made up from Greek iso (equal) and tropos (direction). Right....so when Einstein asserted that the train observer rush toward the light front from the front and receding from the light front from the rear he is describing a scenario that destroys the isotropy of the speed of light in the train. So I guess it is you runt of the SRians failed to comprehend this simple fact. Ken Seto On the contrary, light signals from both strokes are precisely isotropically propagating (in a spherical growing at c shape) from their origin, which is exactly what isotropy propagation means.. When that sphere finds an eye (either the track or the train observer eyes) the observers will say "hey I have detected a strike!". So how you explain this nonsense of "destroying the isotropy of the speed of light". Do you understand English at all? Hey idiot....do you have reading comprehension problem??? According to Einstein: When the train observer rushes toward the light front from the front the transit time is less for that light front to reach him. When the train observer receding away from the light front from the rear the transit time is more for that light front to reach him. This means that different arrival times for the two light fronts that were generated at the same distance from the train observer and thus what Einstein asserted destroyed the SR postulate that the speed of light is isotropic in the train. Are you too stupid to understand that??????? You are the moron with comprehension problems. What the heck has the transit time to do with the isotropy of the light?. ****ing idiot runt.....isotropy of the speed of light means that light takes the same transit time to reach the observer for the same distance in different directions. Ken Seto Again you have to go back to elementary school and learn to read and write. The information carried by the light signals is moving at c isotropically in both the track and the train frame. The difference in arrival times is not produced by how the light is moving, but because the train observer is moving relatively to the light signals. What drugs are you taken that make you think you know something about physics? You have provided substantial evidence that you do not have the slightest idea of what you are talking, like your famous and hilarious theory about the Sodium. Miguel Rios- Hide quoted text - - Show quoted text - ****ing idiot moron.....the observer *moved* after the light signals started their voyage towards the observer. Â*Hey ****ing idiot runt....This shows me that you don't know what isotropic means. The SR postulates says that the speed of light is isotropic in the observer's frame. In case you are too stupid to understand that means that the observer doesn't move wrt different light fronts from the same distance in different directions. You are so ****ing stupid I suggest that you go off to a corner and commit suicide. Ken Seto Miguel Rios- Hide quoted text - - Show quoted text - You know ****o, it is you who is showing and proving day after day the kind of retarded person you are. You don't know what isotropy means, even if the meaning of the word is provided to you. Then you are so moronic as to say that "the observer doesn't move wrt different light fronts from the same distance in different directions" is implied by the isotropy of light. Do you understand the phrase "isotropy of light"? Do you see anywhere in that phrase the word observer? Don't you understand that the track observer and the train observer were at the same location only when t=t'=0, but then the train observer moved to another location? Don't you understand that isotropy of light means that light propagates in a spherical front with center in the point where the event generated the light? Don't you understand that the light propagation speed, according to the second SR postulate, does not depend on the velocity the source of the light had when the light was produced? Exactly....do you understand that? Do you unstanding that that;s why the speed of light is isotropic in the track and in the train? Don't you understand that the location of the train observer, in the middle of the train, is not correlated with the light signal, since that light signal is moving at c with respect to its original source, Hey ****ing idiot it is also moving at c isotropically wrt the train observer. source which, by the way, was and still is located at the same distance from the track observer? Hey ****ing idiot the sources are at the ends of the train. Don't you understand that since the lightning strokes occurred at the same distance from the track observer, and for that very same reason the track observer saw them as simultaneous, Hey ****ing idiot the train observer is also at the same distance from the strikes and thus he also sees them to be simultaneous. then as the light front are propagating from their source locations and as the train with its observer has moved it is impossible for the train observer to get those signals as simultaneous? Hey ****ing idiot the speed of light in the train is independent of the speed of the source. Furthermore the source are at the ends of the train. Also from the train observer's point of view he is not moving wrt the sources because the speed of light is isotropic in his frame. Well it is obvious that we can write and write and show you references and you will not understand, just because you do not have a brain able of understanding. You are only good for insulting people, people like myself that has studied these subjects for more than 40 years. Go away you ignorant runt ****ing idiot I am 20 year ahead of you in understanding SR. Go learn Sr before you make a fool of yourself. Ken Seto |
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#125
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On 9 mayo, 13:24, kenseto wrote:
On May 9, 10:35 am, " wrote: You know ****o, it is you who is showing and proving day after day the kind of retarded person you are. You don't know what isotropy means, even if the meaning of the word is provided to you. Then you are so moronic as to say that "the observer doesn't move wrt different light fronts from the same distance in different directions" is implied by the isotropy of light. Do you understand the phrase "isotropy of light"? Do you see anywhere in that phrase the word observer? Don't you understand that the track observer and the train observer were at the same location only when t=t'=0, but then the train observer moved to another location? Don't you understand that isotropy of light means that light propagates in a spherical front with center in the point where the event generated the light? Don't you understand that the light propagation speed, according to the second SR postulate, does not depend on the velocity the source of the light had when the light was produced? Exactly....do you understand that? Do you unstanding that that;s why the speed of light is isotropic in the track and in the train? Not only that....it is the same light in both cases...you stupid. That means that there is only one sphere of light propagating from the place it was generated, and that sphere don't know or care of the train being moving, or the track observer being still at the station. That is the meaning of isotropy! Don't you understand that the location of the train observer, in the middle of the train, is not correlated with the light signal, since that light signal is moving at c with respect to its original source, Hey ****ing idiot it is also moving at c isotropically wrt the train observer. No moron. The train observer does not know a strike happened until he receives the light signal. You don't know the meaning of isotropic propagation, that's very evident. source which, by the way, was and still is located at the same distance from the track observer? Hey ****ing idiot the sources are at the ends of the train. Once the event happened (that is the lightning strike) it does not matter since the light signal carrying the information is already on its way towards the observers. And, by the way, we could also assume the lightning strike occurred on the side of the train and not in the train and the result is the same. Actually if you read the Einstein book the strokes are not located at the ends of the train. So that proves you have not read or understood the book. Don't you understand that since the lightning strokes occurred at the same distance from the track observer, and for that very same reason the track observer saw them as simultaneous, Hey ****ing idiot the train observer is also at the same distance from the strikes and thus he also sees them to be simultaneous. No stupid, assertion is not proof so prove it. then as the light front are propagating from their source locations and as the train with its observer has moved it is impossible for the train observer to get those signals as simultaneous? Hey ****ing idiot the speed of light in the train is independent of the speed of the source. Furthermore the source are at the ends of the train. Also from the train observer's point of view he is not moving wrt the sources because the speed of light is isotropic in his frame. No stupid, the sources may or may not being at the ends of the trains but that is not important, since the light signals are already moving towards the observers, so the sources of the information are not longer generating light. Secondly, the light information is moving in a spherical way (that is isotropically) from its original location, and from those locations for sure the train observer is moving. Well it is obvious that we can write and write and show you references and you will not understand, just because you do not have a brain able of understanding. You are only good for insulting people, people like myself that has studied these subjects for more than 40 years. Go away you ignorant runt ****ing idiot I am 20 year ahead of you in understanding SR. Go learn Sr before you make a fool of yourself. Ken Seto What everybody here sees is you are an ignorant who has a stupid an wrong theory about physics he has never studied. Besides that you have even problems with junior school arithmetic, as the words salad you call papers have proved to be full of infantile errors. Miguel Rios |
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#126
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On May 9, 3:49*pm, " wrote:
On 9 mayo, 13:24, kenseto wrote: On May 9, 10:35 am, " wrote: You know ****o, it is you who is showing and proving day after day the kind of retarded person you are. Ken Seto What everybody here sees is you are an ignorant who has a stupid an wrong theory about physics he has never studied. Besides that you have even problems with junior school arithmetic, as the words salad you call papers have proved to be full of infantile errors. Miguel Rios- Hide quoted text - - Show quoted text - xxein: Maybe different words and explanations will affect ambiguous readers, but not Ken. He will take the sword before changing his mind. Welcome to the crusades. I hope you will be logical with whatever you have to offer. Sometimes, explaining a clear logic can mean different things to different minds. I bid you well. |
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#127
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On May 9, 9:48Â*am, rbwinn wrote:
On May 9, 6:21Â*am, PD wrote: On May 8, 11:00Â*pm, rbwinn wrote: On May 8, 5:04Â*pm, PD wrote: On May 7, 8:54Â*pm, rbwinn wrote: On May 7, 6:43Â*pm, PD wrote: On May 7, 7:17Â*pm, rbwinn wrote: On May 7, 3:57Â*pm, " wrote: On 7 mayo, 18:38, rbwinn wrote: On May 7, 12:54 pm, " wrote: On 7 mayo, 14:34, rbwinn wrote: On May 7, 10:40�am, " wrote: On 7 mayo, 12:25, rbwinn wrote: On May 7, 8:06 am, PD wrote: Well, no, if lightining strikes the front and rear of a moving train, leaving marks on the train and the track, the marks on the track will be the length of the train apart, which relativity of simultaneity cannot explain. �According to mathematics, if the bolts of lightning are simultaneous in the frame of reference of the track, the marks on the track will be closer together than the length of the train; if the bolts of lightning are simultaneous in the frame of reference of the train, the marks on the track are further apart than the length of the train. �Reality shows that the marks on the track will be the length of the train apart, disproving this false teaching of Einstein. Robert B. Winn Nonsense. That is a bunch of words salad. What in the world those marks you mention have to do with relativity of simultaneity? This shows you have not read anything about SR. What does it mean "according to mathematics"? And where does Einstein say the nonsense of the marks on the track? There are two events (the strikes) and two observers.. What these observers see is the light signal information that tells them about the occurrence of those strikes. That is the reason one of them can certify "I saw both strikes to be simultaneous", while the second certify "I saw the front strike occurring before the back strike". Einstein was the one who thought of the train and two bolts of lightning. Â*He did not fully consider the mathematics of the situation he described. Â*Einstein did not say anything about marks on the track, but I did. Â*The marks on the track prove that relativity of simultaneity cannot exist in reality. Â*Lightning hits the front and rear of the train simultaneously as seen by an observer by the track, leaving marks on the front and rear of the train and marks on the railroad track. Â*The distance between the marks on the train is the length of the train. Â*The distance between the marks on the track is the length of the train. Â*In order for relativity of simultaneity to exist, the marks on the track would have to be closer together than the length of the train. Â*Conversely, if the bolts of lightning are seen simultaneously by the observer on the train, in order for relativity of simultaneity to exist, the marks on the track would have to be further apart than the length of the train. Â*Reality shows that the marks on the track are the length of the train apart. |
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#128
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"xxein" wrote in message ... On May 9, 9:48 am, rbwinn wrote: On May 9, 6:21 am, PD wrote: On May 8, 11:00 pm, rbwinn wrote: On May 8, 5:04 pm, PD wrote: On May 7, 8:54 pm, rbwinn wrote: On May 7, 6:43 pm, PD wrote: On May 7, 7:17 pm, rbwinn wrote: On May 7, 3:57 pm, " wrote: On 7 mayo, 18:38, rbwinn wrote: On May 7, 12:54 pm, " wrote: On 7 mayo, 14:34, rbwinn wrote: On May 7, 10:40?am, " wrote: On 7 mayo, 12:25, rbwinn wrote: On May 7, 8:06 am, PD wrote: Well, no, if lightining strikes the front and rear of a moving train, leaving marks on the train and the track, the marks on the track will be the length of the train apart, which relativity of simultaneity cannot explain. ?According to mathematics, if the bolts of lightning are simultaneous in the frame of reference of the track, the marks on the track will be closer together than the length of the train; if the bolts of lightning are simultaneous in the frame of reference of the train, the marks on the track are further apart than the length of the train. ?Reality shows that the marks on the track will be the length of the train apart, disproving this false teaching of Einstein. Robert B. Winn Nonsense. That is a bunch of words salad. What in the world those marks you mention have to do with relativity of simultaneity? This shows you have not read anything about SR. What does it mean "according to mathematics"? And where does Einstein say the nonsense of the marks on the track? There are two events (the strikes) and two observers. What these observers see is the light signal information that tells them about the occurrence of those strikes. That is the reason one of them can certify "I saw both strikes to be simultaneous", while the second certify "I saw the front strike occurring before the back strike". Einstein was the one who thought of the train and two bolts of lightning. He did not fully consider the mathematics of the situation he described. Einstein did not say anything about marks on the track, but I did. The marks on the track prove that relativity of simultaneity cannot exist in reality. Lightning hits the front and rear of the train simultaneously as seen by an observer by the track, leaving marks on the front and rear of the train and marks on the railroad track. The distance between the marks on the train is the length of the train. The distance between the marks on the track is the length of the train. In order for relativity of simultaneity to exist, the marks on the track would have to be closer together than the length of the train. Conversely, if the bolts of lightning are seen simultaneously by the observer on the train, in order for relativity of simultaneity to exist, the marks on the track would have to be further apart than the length of the train. Reality shows that the marks on the track are the length of the train apart. Robert B. Winn That is complete nonsense. What Einstein wrote about this subject, just for people like you, can be seen inhttp://www.bartleby.com/173/9.html Observers do not have to measure any length (actually it would be very tough to measure a 200000km train, not speaking of how to build it and how to place the tracks). The only requirement is for the observers to coincide at t=0 at x=0, that the strikes occurred at x=-X0 and at x= +X0 and that the train with its observer is moving at a speed v into the +x direction. The observations consist of both observers receiving the light signals that communicate them of the strikes occurrence. Where in the world are you seeing something related to measuring lengths? c=176,000 miles /sec. The mile is a unit of length. The velocity of the train is also measured in units of length divided by time. In addition to that, the train has a length that is measured in units of length. Robert B. Winn And what are you trying to say with that?. We are talking about the relativity of simultaneity, and that refers to time relations, not to length contraction. The whole point of this train thought experiment is to prove that time is not absolute. Miguel Rios- Hide quoted text - - Show quoted text - Relativity of simultaneity, as explained by Einstein, is dependent on length contraction. Actually, no it's not. You'll notice that the relativity of simultaneity is established without needing to reference the distance between the marks. However, you brought up the *additional* information about the distance between the marks. In so doing, you find out that there is a *consequence* of relativity of simultaneity: relativity of length. If lightning strikes both ends of a train, leaving marks on the ends of the train and marks on the track, the only way the marks can be closer together than the length of the train, as is required if the lightning at the front strikes first, is if there is a distance contraction, as seen from the frame of reference of the track. Robert B. Winn- Hide quoted text - Well, as I said, that would be the problem of people who believe it exists. I believe the Galilean transformation equations which indicate that relativity of simultaneity and distance contraction do not exist. I know you believe that. That's because you're ignorant of the experimental data, I believe. If you're not interested enough in the truth to investigate the data, then I'm under no compunction to make you change your beliefs. PD Ignorant of experimental dataI Ignorant of experimental data? The only experiment I have to run is posting equations in sci.physics.relativity. Aha. There, you see, is where you make a basic mistake, confusing looking at equations with looking at experimental data. You keep wanting to look at equations, and you shy away from looking at data. You might consider asking a scientist how science is done, Bobby, rather than just playing it the way you want to play it. So, PD, when are you going to tell us about the experiments that disprove the Galilean transformation equations? I already have, Bobby, and I've reminded you about it too. Just because you're still holding the hoop up, Bobby, doesn't mean that I'm going to jump through it again. You can lift a finger too. You have plenty of time to post all of these denials. If you had anything meaningful, you could post it, too. Science has not written anything about the Galilean transformation equations except proofs that the ether theory does not explain the results of the Michelson- Morley experiment. I have already read enough of those. If you have something new, go ahead and tell us what it is. Robert B. Winn- Hide quoted text - - Show quoted text - | xxein: I am wondering why anybody should even try to teach anything | to a resolute believer in something else. So why do you? |
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On May 9, 8:38Â*am, rbwinn wrote:
On May 9, 5:58Â*am, PD wrote: On May 8, 10:54Â*pm, rbwinn wrote: On May 8, 5:02Â*pm, PD wrote: On May 7, 10:25Â*pm, rbwinn wrote: On May 7, 6:54Â*pm, PD wrote: On May 7, 8:53Â*pm, rbwinn wrote: On May 7, 6:40Â*pm, PD wrote: On May 7, 5:46Â*pm, rbwinn wrote: On May 7, 1:11Â*pm, PD wrote: On May 7, 1:45Â*pm, rbwinn wrote: On May 7, 10:40�am, PD wrote: On May 7, 11:25�am, rbwinn wrote: Well, no, if lightining strikes the front and rear of a moving train, leaving marks on the train and the track, the marks on the track will be the length of the train apart, which relativity of simultaneity cannot explain. Sure, it explains it. Here's how: The track observer goes back after the train has passed and notes that the marks on the track are 400 m apart. Remember that, for the track observer, the strikes hit simultaneously. Since the marks are also on the train, the track observer correctly notes that the train is 400 m long. (This is what a length measurement entails anyway: marking the locations of the ends of an object at the same time.) Now the train observer goes back after the strikes have hit and notes that the marks on the train are 500 m apart. But it's also true that this observer saw the front strike happen before the rear strike --- the strikes are not simultaneous in this frame. So it doesn't bother this observer at all that the track observer sees the marks 400 m apart. That's exactly what you'd expect if you marked the location of the front of a moving object before you marked the location of the rear of the moving object -- and that's exactly what the train observer is sure happened. The length of the train is frame-dependent. Whether the marks at the end of the train were made at the same time, is also frame-dependent. Does this help you understand? The train has an actual length. No, actually, it does not. Length is a frame-dependent quantity. The value in one frame is no more "actual" than the value in another frame. Now, there is a "rest length" which is the length measured in the frame in which the train just happens to be at rest, but there is nothing preferential about this frame. Well, no, length is not a frame dependent quantity. That is at variance with experimental observation. Nice conjecture, though. How's that working for ya? Â*Length is length. Â*There is no distance contraction. Robert B. Winn- Hide quoted text - Well, the Galilean transformation equations indicate otherwise.. The Galilean transformation equations are also at variance with experimental observation. That's why they've been dropped. You can do that with mathematics that doesn't model reality well. Nice conjecture, though. How's that working for ya? PD The Galilean transformation equations work very well. Â*The Lorentz equations not so well, but they give a fairly close approximation. Â*So when are you going to tell us what the experiment was that proved the Galilean transformation equations wrong? I've already told you and pointed it out to you. You responded that you don't read what scientists point out to you. How's that working for you? It got me to the Galilean transformation equations. Â*As far as I can tell, I am the only one in the world who understands this subject. Robert B. Winn OK, so let's recap, shall we? You believe the Galilean transformations work well. However, you are unaware of the experimental evidence that shows the Galilean transformations do not work well. You have the policy of not reading references provided to you by scientists that the Galilean transformations do not work well. This policy has led you to believe further in the truth of the Galilean transformations, and you further believe that you are the only person in the world that understands this to be the case. As far as I know, I am the only person in the world who uses the Galiilean transformation equations. Well, you don't much of anything very far, it seems. Â*They work fine for me. Yes, I imagine that's so. This is perhaps because you like playing with equations and don't care much about experimental evidence. This is probably one of the key differences between you and scientists. Â*So unless you can show me they do not work,I have to just discount anything that you and other scientists say about it. Well, as I've told you before, Bobby, the point isn't to convince you. What you continue to believe is your business. Â*You have posted nothing here that shows them to be wrong. Â*With regard to your complaint that I do not fulfill the fool's errands that you try to send me on, it is not going to happen. Â*If you have a reference that you claim proves that the Galilean transformation equations do not work, go ahead and tell us what it is and why you think it proves the Galilean transformation equations wrong. I've done exactly that. You call it a fool's errand. Now, I haven't got the foggiest idea why you'd ask me to provide something for you that you would consider a fool's errand and that you don't have the least interest in looking at. It's a little like the bored old man sitting on the porch who hollers at the neighbor kid, "Hey, kid, fetch me a bucket!" And when the bucket comes and the kid asks, "So what do you need a bucket for?" the old man says, "I don't need a bucket at all. I just wanted to see you bring one to me." Â*You have plenty of time to assign these fool's errands. Â*Take a little of that time to explain yourself. Robert B. Winn |