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GETTING RID OF EINSTEIN'S ABSURDITIES
After a century of merciless destruction of human rationality
(scientists have been forced to foolishly travel in time, trap long trains inside short tunnels etc.), now the postscientific world is intent on resolving the famous twin paradox: http://twinparadox.net/ An Open Letter to the Physics Community - 11/14/10 The Twin Paradox "2011 is the centennial anniversary of the publication of Paul Langevin's famous paper "On Space and Time" in which he introduced, what became popularly known, as the Twin Paradox. This letter discusses the results of a recent study of the Twin Paradox problem. This NPA study concluded that, after 100 years of work on this famous problem in special relativity, the Twin Paradox continues to be unresolved. Our purpose in writing this letter is to request that a specific, new course of action be undertaken to resolve this problem." http://www.rehseis.cnrs.fr/spip.php?article768 jeudi 16 juin et vendredi 17 juin 2011 salle Klimt, 366A Le paradoxe des jumeaux : interprétations en conflit Thierry Grandou (Université de Nice), Jean-Marc Levy-Leblond (Université de Nice), Philippe Lombard (Irem de Lorraine), Jean-Pierre Luminet (CNRS), Elie During (Université Paris Ouest - Nanterre), Alexis de Saint-Ours (Université Paris-Diderot) How can one "resolve" an absurdity? Consider an analogous situation in Big Brother's world: http://www.liferesearchuniversal.com/1984-7.html George Orwell: "In the end the Party would announce that two and two made five, and you would have to believe it. It was inevitable that they should make that claim sooner or later: the logic of their position demanded it. Not merely the validity of experience, but the very existence of external reality, was tacitly denied by their philosophy. The heresy of heresies was common sense. And what was terrifying was not that they would kill you for thinking otherwise, but that they might be right. For, after all, how do we know that two and two make four? Or that the force of gravity works? Or that the past is unchangeable? If both the past and the external world exist only in the mind, and if the mind itself is controllable what then?" Oceania's scientists have long ago advanced the fundamental postulate 2+2=5 and are now trying to resolve the following paradox: 3(2+2) = 3*5 = 15 3(2+2) = 3*2 + 3*2 = 6 + 6 = 12 Can the "paradox" be resolved? It can't of course. Oceania's scientists can only get rid of the false postulate 2+2=5. Analogously, scientists who do not want to live in Einsteiniana's schizophrenic world any longer will have to get rid of Einstein's 1905 false constant-speed-of-light postulate: http://www.fourmilab.ch/etexts/einstein/specrel/www/ ON THE ELECTRODYNAMICS OF MOVING BODIES By A. Einstein, June 30, 1905 "We will raise this conjecture (the purport of which will hereafter be called the "Principle of Relativity'') to the status of a postulate, and also introduce another postulate, which is only apparently irreconcilable with the former, namely, that light is always propagated in empty space with a definite velocity c which is independent of the state of motion of the emitting body. (...) Any ray of light moves in the "stationary'' system of co-ordinates with the determined velocity c, whether the ray be emitted by a stationary or by a moving body. (...) From this there ensues the following peculiar consequence. If at the points A and B of K there are stationary clocks which, viewed in the stationary system, are synchronous; and if the clock at A is moved with the velocity v along the line AB to B, then on its arrival at B the two clocks no longer synchronize, but the clock moved from A to B lags behind the other which has remained at B by tv^2/2c^2 (up to magnitudes of fourth and higher order), t being the time occupied in the journey from A to B. It is at once apparent that this result still holds good if the clock moves from A to B in any polygonal line, and also when the points A and B coincide. If we assume that the result proved for a polygonal line is also valid for a continuously curved line, we arrive at this result: If one of two synchronous clocks at A is moved in a closed curve with constant velocity until it returns to A, the journey lasting t seconds, then by the clock which has remained at rest the travelled clock on its arrival at A will be tv^2/2c^2 second slow." Pentcho Valev |
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GETTING RID OF EINSTEIN'S ABSURDITIES
Einstein's 1905 false constant-speed-of-light postulate allows
Einsteinians to trap arbitrarily long objects inside arbitrarily short containers: http://www.youtube.com/watch?v=VSRIy...related&search Einsteinians trap long trains inside short tunnels http://math.ucr.edu/home/baez/physic...barn_pole.html "These are the props. You own a barn, 40m long, with automatic doors at either end, that can be opened and closed simultaneously by a switch. You also have a pole, 80m long, which of course won't fit in the barn. Now someone takes the pole and tries to run (at nearly the speed of light) through the barn with the pole horizontal. Special Relativity (SR) says that a moving object is contracted in the direction of motion: this is called the Lorentz Contraction. So, if the pole is set in motion lengthwise, then it will contract in the reference frame of a stationary observer.....So, as the pole passes through the barn, there is an instant when it is completely within the barn. At that instant, you close both doors simultaneously, with your switch. Of course, you open them again pretty quickly, but at least momentarily you had the contracted pole shut up in your barn. The runner emerges from the far door unscathed.....If the doors are kept shut the rod will obviously smash into the barn door at one end. If the door withstands this the leading end of the rod will come to rest in the frame of reference of the stationary observer. There can be no such thing as a rigid rod in relativity so the trailing end will not stop immediately and the rod will be compressed beyond the amount it was Lorentz contracted. If it does not explode under the strain and it is sufficiently elastic it will come to rest and start to spring back to its natural shape but since it is too big for the barn the other end is now going to crash into the back door and the rod will be trapped IN A COMPRESSED STATE inside the barn." http://www.quebecscience.qc.ca/Revolutions "Cependant, si une fusée de 100 m passait devant nous à une vitesse proche de celle de la lumière, elle pourrait sembler ne mesurer que 50 m, ou même moins. Bien sûr, la question qui vient tout de suite à l'esprit est: «Cette contraction n'est-elle qu'une illusion?» Il semble tout à fait incroyable que le simple mouvement puisse comprimer un objet aussi rigide qu'une fusée. Et pourtant, la contraction est réelle... mais SANS COMPRESSION physique de l'objet! Ainsi, une fusée de 100 m passant à toute vitesse dans un tunnel de 60 m pourrait être entièrement contenue dans ce tunnel pendant une fraction de seconde, durant laquelle il serait possible de fermer des portes aux deux bouts! La fusée est donc réellement plus courte. Pourtant, il n'y a PAS DE COMPRESSION matérielle ou physique de l'engin. Comment est-ce possible?" http://alcor.concordia.ca/~scol/semi...ts/Durand.html "La contraction une longueur est un phénomène à la fois réel mais sans déformation structurelle. C'est un phénomène réel (et non pas une illusion) car, par exemple, une perche dont la longueur au repos est plus grande que la longueur au repos d'une grange peut réellement être contenue dans cette dernière si elle se déplace assez rapidement. Par contre, il ne peut y avoir de contraction structurelle de la perche, i.e de déformation matérielle de l'objet, car la contraction de sa longueur aurait aussi lieu si c'était plutôt l'observateur qui se mettait en mouvement sans changer l'état de mouvement de la perche. Autrement dit, sans changer l'état de la perche, en se mettant soi- même en mouvement, on change sa longueur: ce n'est donc clairement pas une contraction matérielle (l'état de la perche est le même dans les deux cas)." How can one "resolve" the absurdity? Relevant questions, e.g. "How great is the force the trapped object applies to the closed doors of the container?", sound silly. Any dispute between Einsteinians and antirelativists unavoidably degenerates into equivocation, with silly arguments coming from both sides. The long-object-inside-short-container absurdity (the consequent) CANNOT be resolved. The only reasonable approach consists in getting rid of the antecedent, Einstein's 1905 false constant-speed-of-light postulate. Pentcho Valev |
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GETTING RID OF EINSTEIN'S ABSURDITIES
Logically, Einsteiniana's absurdities often have nothing to do with
Einstein's 1905 false constant-speed-of-light postulate or any other tenet of Einstein's theory: http://www.nature.com/news/2000/0007...s000720-9.html Philip Ball: "The experiments that increase the speed of light above c appear to pose a more serious challenge to relativity. Einstein's theory implies that any object moving faster than c will be moving backwards in time. As this limerick illustrates: "There was a young lady named Bright, Whose speed was faster than light. She went out one day, In a relative way, And returned the previous night." The objection to this kind of time travel is based as much on logic as on physics. What if Ms Bright had returned not on the previous night but 50 years earlier, and had assassinated one of her grandparents before they had conceived her mother? Then Ms Bright could never have been born in the first place. This so-called 'grandfather paradox' demonstrates that faster-than-light travel is absurd. In short, it would violate causality - the principle that all causes must precede their effects." Philip Ball, do you really believe that "Einstein's theory implies that any object moving faster than c will be moving backwards in time"? I am afraid Einstein's theory does not imply anything like that. Yet ALL absurdities, even those logically unrelated to Einstein's 1905 constant-speed-of-light postulate, will be "resolved" as soon as this postulate is officially declared false. In fact, Einstein did declare it false in 1954 (sometimes people get honest at the end of their lives) but used enigmatic language that today's postscientists are unable or unwilling to disentangle: http://www.perimeterinstitute.ca/ind...ecture_id=3576 John Stachel: "Einstein discussed the other side of the particle-field dualism - get rid of fields and just have particles." EINSTEIN'S 1954 CONFESSION: "I consider it entirely possible that physics cannot be based upon the field concept, that is on continuous structures. Then nothing will remain of my whole castle in the air, including the theory of gravitation, but also nothing of the rest of contemporary physics." John Stachel's comment: "If I go down, everything goes down, ha ha, hm, ha ha ha." http://www.pbs.org/wgbh/nova/einstein/genius/ A clue to EINSTEIN'S 1954 CONFESSION: "And then, in June, Einstein completes special relativity, which adds a twist to the story: Einstein's March paper treated light as particles, but special relativity sees light as a continuous field of waves. Alice's Red Queen can accept many impossible things before breakfast, but it takes a supremely confident mind to do so. Einstein, age 26, sees light as wave and particle, picking the attribute he needs to confront each problem in turn. Now that's tough." http://www.amazon.com/Relativity-Its.../dp/0486406768 "Relativity and Its Roots" By Banesh Hoffmann A second clue to EINSTEIN'S 1954 CONFESSION: "Moreover, if light consists of particles, as Einstein had suggested in his paper submitted just thirteen weeks before this one, the second principle seems absurd: A stone thrown from a speeding train can do far more damage than one thrown from a train at rest; the speed of the particle is not independent of the motion of the object emitting it. And if we take light to consist of particles and assume that these particles obey Newton's laws, they will conform to Newtonian relativity and thus automatically account for the null result of the Michelson-Morley experiment without recourse to contracting lengths, local time, or Lorentz transformations. Yet, as we have seen, Einstein resisted the temptation to account for the null result in terms of particles of light and simple, familiar Newtonian ideas, and introduced as his second postulate something that was more or less obvious when thought of in terms of waves in an ether." http://arxiv.org/PS_cache/astro-ph/p.../0305457v3.pdf New varying speed of light theories Joao Magueijo A third clue to EINSTEIN'S 1954 CONFESSION: "In sharp contrast, the constancy of the speed of light has remain sacred, and the term "heresy" is occasionally used in relation to "varying speed of light theories". The reason is clear: the constancy of c, unlike the constancy of G or e, is the pillar of special relativity and thus of modern physics. Varying c theories are expected to cause much more structural damage to physics formalism than other varying constant theories." http://www.ekkehard-friebe.de/wallace.htm The farce of physics Bryan Wallace A fourth clue to EINSTEIN'S 1954 CONFESSION: "Einstein's special relativity theory with his second postulate that the speed of light in space is constant is the linchpin that holds the whole range of modern physics theories together. Shatter this postulate, and modern physics becomes an elaborate farce! (...) The speed of light is c+v." http://www.docstoc.com/docs/50282475...s-dans-loeuvre A fifth clue to EINSTEIN'S 1954 CONFESSION (Louis de Broglie): "Tout d'abord toute idée de "grain" se trouvait expulsée de la théorie de la Lumière : celle-ci prenait la forme d'une "théorie du champ" où le rayonnement était représenté par une répartition continue dans l'espace de grandeurs évoluant continûment au cours du temps sans qu'il fût possible de distinguer, dans les domaines spatiaux au sein desquels évoluait le champ lumineux, de très petites régions singulières où le champ serait très fortement concentré et qui fournirait une image du type corpusculaire. Ce caractère à la fois continu et ondulatoire de la lumière se trouvait prendre une forme très précise dans la théorie de Maxwell où le champ lumineux venait se confondre avec un certain type de champ électromagnétique." Pentcho Valev |
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GETTING RID OF EINSTEIN'S ABSURDITIES
Einsteiniana's priests defend Einstein's absurdities: Even if the
speed of light is variable, Divine Albert's Divine Theory is still true, simply because Einstein's 1905 false constant-speed-of-light postulate is obsolete (believers invariably sing "Divine Einstein" and "Yes we all believe in relativity, relativity, relativity"): http://www.larecherche.fr/content/re...ticle?id=16963 Jean-Marc Lévy-Leblond: "Mais l'inutile et depuis longtemps caduc « second postulat » (celui de l'invariance de la vitesse de la lumière) garde encore une place de choix dans les exposés." http://o.castera.free.fr/pdf/Chronogeometrie.pdf Jean-Marc Lévy-Leblond "De la relativité à la chronogéométrie ou: Pour en finir avec le "second postulat" et autres fossiles": "D'autre part, nous savons aujourd'hui que l'invariance de la vitesse de la lumière est une conséquence de la nullité de la masse du photon. Mais, empiriquement, cette masse, aussi faible soit son actuelle borne supérieure expérimentale, ne peut et ne pourra jamais être considérée avec certitude comme rigoureusement nulle. Il se pourrait même que de futures mesures mettent en évidence une masse infime, mais non-nulle, du photon ; la lumière alors n'irait plus à la "vitesse de la lumière", ou, plus précisément, la vitesse de la lumière, désormais variable, ne s'identifierait plus à la vitesse limite invariante. Les procédures opérationnelles mises en jeu par le "second postulat" deviendraient caduques ipso facto. La théorie elle-même en serait-elle invalidée ? Heureusement, il n'en est rien ; mais, pour s'en assurer, il convient de la refonder sur des bases plus solides, et d'ailleurs plus économiques. En vérité, le premier postulat suffit, à la condition de l'exploiter à fond." http://www.hep.princeton.edu/~mcdona..._44_271_76.pdf Jean-Marc Levy-Leblond: "This is the point of view from wich I intend to criticize the overemphasized role of the speed of light in the foundations of the special relativity, and to propose an approach to these foundations that dispenses with the hypothesis of the invariance of c. (...) We believe that special relativity at the present time stands as a universal theory discribing the structure of a common space-time arena in which all fundamental processes take place. (...) The evidence of the nonzero mass of the photon would not, as such, shake in any way the validity of the special relalivity. It would, however, nullify all its derivations which are based on the invariance of the photon velocity." http://groups.google.ca/group/sci.ph...1ebdf49c012de2 Tom Roberts: "If it is ultimately discovered that the photon has a nonzero mass (i.e. light in vacuum does not travel at the invariant speed of the Lorentz transform), SR would be unaffected but both Maxwell's equations and QED would be refuted (or rather, their domains of applicability would be reduced)." http://www.amazon.com/Einsteins-Rela.../dp/9810238886 Jong-Ping Hsu: "The fundamentally new ideas of the first purpose are developed on the basis of the term paper of a Harvard physics undergraduate. They lead to an unexpected affirmative answer to the long-standing question of whether it is possible to construct a relativity theory without postulating the constancy of the speed of light and retaining only the first postulate of special relativity. This question was discussed in the early years following the discovery of special relativity by many physicists, including Ritz, Tolman, Kunz, Comstock and Pauli, all of whom obtained negative answers." http://www.newscientist.com/article/...elativity.html Why Einstein was wrong about relativity 29 October 2008, Mark Buchanan, NEW SCIENTIST "This "second postulate" is the source of all Einstein's eccentric physics of shrinking space and haywire clocks. And with a little further thought, it leads to the equivalence of mass and energy embodied in the iconic equation E = mc2. The argument is not about the physics, which countless experiments have confirmed. It is about whether we can reach the same conclusions without hoisting light onto its highly irregular pedestal. (...) But in fact, says Feigenbaum, both Galileo and Einstein missed a surprising subtlety in the maths - one that renders Einstein's second postulate superfluous. (...) The idea that Einstein's relativity has nothing to do with light could actually come in rather handy. For one thing, it rules out a nasty shock if anyone were ever to prove that photons, the particles of light, have mass. We know that the photon's mass is very small - less than 10-49 grams. A photon with any mass at all would imply that our understanding of electricity and magnetism is wrong, and that electric charge might not be conserved. That would be problem enough, but a massive photon would also spell deep trouble for the second postulate, as a photon with mass would not necessarily always travel at the same speed. Feigenbaum's work shows how, contrary to many physicists' beliefs, this need not be a problem for relativity." http://groups.google.com/group/sci.p...d3ebf3b94d89ad Tom Roberts: "As I said before, Special Relativity would not be affected by a non-zero photon mass, as Einstein's second postulate is not required in a modern derivation (using group theory one obtains three related theories, two of which are solidly refuted experimentally and the third is SR). So today's foundations of modern physics would not be threatened. http://arxiv.org/PS_cache/arxiv/pdf/...806.1234v1.pdf Mitchell J. Feigenbaum: "In this paper, not only do I show that the constant speed of light is unnecessary for the construction of the theories of relativity, but overwhelmingly more, there is no room for it in the theory. (...) We can make a few guesses. There is a "villain" in the story, who, of course, is Newton." Pentcho Valev |
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GETTING RID OF EINSTEIN'S ABSURDITIES
Pernicious "heresy" in Einsteinana:
http://www.downtoearth.org.in/node/15131 "Was Einstein wrong? The speed of light has slowed down since the Big Bang, a team of Sydney researchers has conjectured. If true, the findings rock the very foundations of some of our most sacred scientific laws. The discovery was made by Paul Davies from Macquarie University and Tamara Davis and Charles Lineweaver from University of New South Wales. Based on measurements of light that has travelled for 10 to 12 billion years to reach Earth from massive stellar objects called quasars, the scientists argue that light speed, which clocks 300,000 kilometres a second, has been slowing down over time. They have proposed several reasons for this, including the possibility that the structure of the vacuum in space has changed. When light travels through a medium other than a vacuum, such as a glass of water, it slows down. If the vacuum of space is changing uniformly across the universe, just as the universe is expanding uniformly, it could affect the speed of light by slowing it, they say. So, do the findings mean that the great cosmological constant should now be consigned to the dusty annals of history? Not necessarily, say the scientists. It just means Einstein's theory based on the speed light being constant might no longer be the last word on the subject. This discovery implies that faster-than-light travel, which is prohibited by the law of relativity, may one day be possible. "It also affects other branches of physics like thermodynamic and quantum physics," says Davies." Such "heresies" make Einstein's 1905 false constant-speed-of-light postulate unassailable. Einsteinians all over the world sincerely believe that the criticism of this postulate made by Einsteiniana's priests Joao Magueijo, Paul Davies, John Moffat, John Barrow and Lee Smolin is quite enough. Divine Albert's Divine Theory is by no means dogmatic - Masters say the speed of light is constant, then Masters say the speed of light is variable, in the end Masters say again the speed of light is constant. Einsteinians all over the world cannot imagine a more tolerant atmosphere in science. Any walk is permitted: http://www.youtube.com/watch?v=b558k...C0155A9 09EEF Silly Walks Applicant: "Well sir, I have a silly walk and I'd like to obtain a Government grant to help me develop it....I think that with Government backing I could make it very silly." Silly Walks Director: "Mr Pudey, the very real problem is one of money. I'm afraid that the Ministry of Silly Walks is no longer getting the kind of support it needs. You see there's Defence, Social Security, Health, Housing, Education, Silly Walks ... they're all supposed to get the same. But last year, the Government spent less on the Ministry of Silly Walks than it did on National Defence! Now we get 348,000,000 a year, which is supposed to be spent on all our available products." Pentcho Valev |
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GETTING RID OF EINSTEIN'S ABSURDITIES
A very popular educational text:
http://www.pitt.edu/~jdnorton/teachi...ity/index.html John Norton: "That each finds the others clocks slowed and rods shrunk is troubling. But it is not immediately obvious that there is a serious problem. If I walk away from you, simple perspective effects make it look to each of us that the other is getting smaller. That perspectival effect should not worry anyone. The car in the garage problem is an attempt to show that the relativistic effects are more serious than this simple perspectival effect. There is, it tries to show, a real contradiction; and we should not tolerate contradictions in a physical theory. Here is how we might try to get a contradiction out of the relativistic effect of each observer judging the other to have shrunk. Imagine a car that fits perfectly into a garage. The garage is a small free standing shed that is just as long as the car. There is a door at the right and a door at the left of the garage. The car fits exactly - as long as it is at rest. Now image that we drive the car at 86.6% speed of light through the garage from right to left. The doors have been opened at the right and the left of the garage to allow passage of the car. There is a garage attendant, who stands at rest with respect to the garage. Can the garage attendant close both doors so that, at least for a few brief moments, the car is fully enclosed within the garage? According to the garage attendant, there is no problem achieving this. At 86.6% the speed of light, the car has shrunk to half of its length at rest. It fits in the garage handily. The garage attendant can close both doors and trap the car inside." The honest (but weaker) moiety of John Norton's split personality: "The car in the garage problem is an attempt to show that the relativistic effects are more serious than this simple perspectival effect. There is, it tries to show, a real contradiction; and we should not tolerate contradictions in a physical theory." Then the dishonest moiety of John Norton's split personality manages to camouflage the real contradiction by assuming that the garage is "just as long as the car". However Divine Albert's Divine Theory says that even if the garage length were half of the car length (at rest), the garage attendant would still be able to trap the car inside the garage. Of the millions of readers not one could think of a reason why the long-car-trapped-inside-the-short-garage absurdity should be discussed, let alone questioned. We all live in the era of Postscientism. Pentcho Valev |
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GETTING RID OF EINSTEIN'S ABSURDITIES
Einstein desperately trying to get rid of his own absurdities:
http://www.aip.org/history/einstein/...relativity.htm John Stachel: "But here he ran into the most blatant-seeming contradiction, which I mentioned earlier when first discussing the two principles. As noted then, the Maxwell-Lorentz equations imply that there exists (at least) one inertial frame in which the speed of light is a constant regardless of the motion of the light source. Einstein's version of the relativity principle (minus the ether) requires that, if this is true for one inertial frame, it must be true for all inertial frames. But this seems to be nonsense. How can it happen that the speed of light relative to an observer cannot be increased or decreased if that observer moves towards or away from a light beam? Einstein states that he wrestled with this problem over a lengthy period of time, to the point of despair. We have no details of this struggle, unfortunately." The only reasonable solution to Einstein's problem: The speed of light does depend on the speed of the observer, that is, Einstein's 1905 constant-speed-of-light postulate is false and should be rejected: http://www.hep.man.ac.uk/u/roger/PHY.../lecture18.pdf Roger Barlow: "Now suppose the source is fixed but the observer is moving towards the source, with speed v. In time t, ct/(lambda) waves pass a fixed point. A moving point adds another vt/(lambda). So f'=(c +v)/(lambda)." http://www-physics.ucsd.edu/students.../lecture16.pdf Convention we will choose: u = velocity of observer or source v = velocity of wave Moving Observer Observer approaching: f'=(1/T')=(v+u)/(lambda) Observer receding: f'=(1/T')=(v-u)/(lambda) http://www.expo-db.be/ExposPrecedent...%20Doppler.pdf 6. Source immobile - Observateur en mouvement La distance entre les crêtes, la longueur d'onde lambda ne change pas. Mais la vitesse des crêtes par rapport à l'observateur change ! L'observateur se rapproche de la source f' = V'/(lambda) f' = f (1 + Vo/V) L'observateur s'éloigne de la source f' = f (1 - Vo/V) http://www.eng.uwi.tt/depts/elec/sta...relativity.pdf The Invalidation of a Sacred Principle of Modern Physics Stephan J.G. Gift "For a stationary observer O, the stationary light source S emits light at speed c, wavelength Lo, and frequency Fo given by Fo=c/Lo. If the observer moves toward S at speed v, then again based on classical analysis, the speed of light relative to the moving observer is (c + v) and not c as required by Einstein's law of light propagation. Hence the observer intercepts wave-fronts of light at a frequency fA, which is higher than Fo, as is observed, and is given by fA = (c+v)/Lo Fo. (...) In light of this elementary result invalidating STR, it is difficult to understand why this invalid theory has been (and continues to be) accepted for the past 100 years." Pentcho Valev |
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GETTING RID OF EINSTEIN'S ABSURDITIES
Einsteinians discuss the long-object-inside-short-container absurdity:
http://groups.google.com/group/sci.p...d56b706c80a1a# sci.physics.research: "Energy stored in a length contracted pole" Selected quotes: Jartza: "Now there is huge pressure in the tube (because a 10 m long pole is in a 5 m long tube) The energy to generate the pressure came ... from where?" Eric Gisse: "Except the pole isn't 10m in your reference frame. It is 5m. There is no pressure." Jartza: "A 100 m long pole is accelerated to speed 0.866 c, which makes the pole a 50 m long pole. Now the pole is stopped in a very very very _VERY_ short time. Obviously immediately after the stopping the length of the pole is 50 m, and the pole is exploding." Moderator's note: "After it's stopped, the pole is (still) 100 m long in its own rest frame (which is a different inertial frame from the inertial frame of #1). So, there's no explosion. If you actually want to *understand* special relativity, your best bet is tutoring by a knowledgable teacher, or failing that, *carefully* reading a *good* book or two. My favorite introductory special relativity books for this purpose are Taylor & Wheeler "Spacetime Physics" 2nd edition and N. David Mermin, "Space and Time in Special Relativity". Daryl McCullough: "I don't understand the moderator's note, at all. As measured in the initial frame, there is a time that the pole is traveling at 0.866c, and its length is 50 meters. There is a later time in which the pole is at rest, and its length is 100 meters. In this frame, the pole has expanded from 50 meters to 100 meters. That's an explosion. If someone tried to enclose the pole in a strong box 50 meters in length, then either the box will break, or the pole will, or both. That's not some kind of illusion, it's a real catastrophe." Tom Roberts: "The moderator clearly only discussed the situation before stopping, and the situation well after the pole is stopped, with an implicit assumption that the pole remained a pole and achieved its normal (equilibrium) length. This ignores what happens during the stopping, which is indeed an explosion (but there's no explosion after it is stopped and equilibrated, assuming it does equilibrate)." Tom Roberts: "Given no rebound (e.g. the pole is made up of non- interacting dust particles), I suspect that in the original description, the pole remains 50 m long in the observer's frame (that of the tube)." Pentcho Valev wrote: Einstein's 1905 false constant-speed-of-light postulate allows Einsteinians to trap arbitrarily long objects inside arbitrarily short containers: http://www.youtube.com/watch?v=VSRIy...related&search Einsteinians trap long trains inside short tunnels http://math.ucr.edu/home/baez/physic...barn_pole.html "These are the props. You own a barn, 40m long, with automatic doors at either end, that can be opened and closed simultaneously by a switch. You also have a pole, 80m long, which of course won't fit in the barn. Now someone takes the pole and tries to run (at nearly the speed of light) through the barn with the pole horizontal. Special Relativity (SR) says that a moving object is contracted in the direction of motion: this is called the Lorentz Contraction. So, if the pole is set in motion lengthwise, then it will contract in the reference frame of a stationary observer.....So, as the pole passes through the barn, there is an instant when it is completely within the barn. At that instant, you close both doors simultaneously, with your switch. Of course, you open them again pretty quickly, but at least momentarily you had the contracted pole shut up in your barn. The runner emerges from the far door unscathed.....If the doors are kept shut the rod will obviously smash into the barn door at one end. If the door withstands this the leading end of the rod will come to rest in the frame of reference of the stationary observer. There can be no such thing as a rigid rod in relativity so the trailing end will not stop immediately and the rod will be compressed beyond the amount it was Lorentz contracted. If it does not explode under the strain and it is sufficiently elastic it will come to rest and start to spring back to its natural shape but since it is too big for the barn the other end is now going to crash into the back door and the rod will be trapped IN A COMPRESSED STATE inside the barn." http://www.quebecscience.qc.ca/Revolutions "Cependant, si une fusée de 100 m passait devant nous à une vitesse proche de celle de la lumière, elle pourrait sembler ne mesurer que 50 m, ou même moins. Bien sûr, la question qui vient tout de suite à l'esprit est: «Cette contraction n'est-elle qu'une illusion?» Il semble tout à fait incroyable que le simple mouvement puisse comprimer un objet aussi rigide qu'une fusée. Et pourtant, la contraction est réelle... mais SANS COMPRESSION physique de l'objet! Ainsi, une fusée de 100 m passant à toute vitesse dans un tunnel de 60 m pourrait être entièrement contenue dans ce tunnel pendant une fraction de seconde, durant laquelle il serait possible de fermer des portes aux deux bouts! La fusée est donc réellement plus courte. Pourtant, il n'y a PAS DE COMPRESSION matérielle ou physique de l'engin. Comment est-ce possible?" http://alcor.concordia.ca/~scol/semi...ts/Durand.html "La contraction une longueur est un phénomène à la fois réel mais sans déformation structurelle. C'est un phénomène réel (et non pas une illusion) car, par exemple, une perche dont la longueur au repos est plus grande que la longueur au repos d'une grange peut réellement être contenue dans cette dernière si elle se déplace assez rapidement. Par contre, il ne peut y avoir de contraction structurelle de la perche, i.e de déformation matérielle de l'objet, car la contraction de sa longueur aurait aussi lieu si c'était plutôt l'observateur qui se mettait en mouvement sans changer l'état de mouvement de la perche. Autrement dit, sans changer l'état de la perche, en se mettant soi- même en mouvement, on change sa longueur: ce n'est donc clairement pas une contraction matérielle (l'état de la perche est le même dans les deux cas)." How can one "resolve" the absurdity? Relevant questions, e.g. "How great is the force the trapped object applies to the closed doors of the container?", sound silly. Any dispute between Einsteinians and antirelativists unavoidably degenerates into equivocation, with silly arguments coming from both sides. The long-object-inside-short-container absurdity (the consequent) CANNOT be resolved. The only reasonable approach consists in getting rid of the antecedent, Einstein's 1905 false constant-speed-of-light postulate. Pentcho Valev |
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GETTING RID OF EINSTEIN'S ABSURDITIES
Pentcho Valev a écrit :
The long-object-inside-short-container absurdity (the consequent) CANNOT be resolved. It CAN, it's actually in the FAQ of fr.sci.physics. There is NO absurdity, you're just too dumb to realize it. |
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