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Why relativists don't understand Einstein's 1905 mathematics.
On Sep 1, 3:39 pm, John Kennaugh
wrote in sci.physics.relativity: The TimeLord wrote: By 1905 the first postulate had been shown to be experimentally true in that the one type of experiment which was expected to show it to be false (the MMX and others) had failed to do so. Lorentz's aether theory recognised the experimental truth of the PoR. It is possible that Einstein wanted it to be more than that but either way mathematically it had been shown to be true - it forms the first postulate. What Einstein actually did next was to assume that Maxwell's wave in aether theory is impeccable (despite having got a Nobel prize for demonstrating that the waves of Maxwell's theory do not physically exist). If you assume Maxwell's wave in aether theory is impeccable and if there is no obvious flaw in the MMX experiment then you interpret the MMX experiment as showing that an observer's speed relative to the aether is zero. The second postulate simply describes what an observer, stationary w.r.t the aether would observe. The rest of Einstein's 1905 paper is what Waldron calls "clumsy algebra" by which he produces a theory mathematically identical to Lorentz's. According to the historian Whittaker, the second postulate was a statement of what was generally accepted at the time and the clue to the truth of this is that while Einstein goes to some length to justify the first postulate he simply introduces the second without comment. In fact his first statement of the second postulate is exceedingly sloppy and can be interpreted in more than one way. Again if he was introducing a novel concept he would have taken more trouble to explain exactly what he meant. It is only his second statement of the second postulate in the section 2. "On the Relativity of Lengths and Times" which is unambiguous. His 1920 lecture is where he explained what it was all about. What he objected to was the asymmetry in the theoretical structure of Lorentz's theory. i.e. the idea that lurking within the physical theory of Lorentz was a unique FoR stationary w.r.t the aether which was indistinguishable from every other FoR. Although this results in a PoR which is experimentally true Einstein wanted the PoR to be an absolute principle. In order to achieve that symmetry a different sort of aether is required what he calls "an aether without the immobility of Lorentz's" . His 1920 lecture is deliberately vague (or general in nature if you prefer) but two things are undeniable. One, that he comes down in favour of the aether for a number of reasons, the other that he rejects that this implies there is a special FoR associated with (stationary w.r.t) the aether. In order to achieve symmetry every observer's relationship with the aether must be the same - which brings us back to the second postulate which in effect says that every observer is stationary w.r.t the aether as shown by the MMX (IF one assumes that Maxwell's wave in aether theory is impeccable). While Einstein expected nature to provide a suitable aether which every observer would naturally find himself stationary w.r.t no one else shared that vision. What complicated matters was that his SR theory had already been accepted on the assumption that it did not require an aether at all because it states: "The introduction of a 'luminiferous ether' will prove to be superfluous ...." 1905 SR paper No one seems to have asked the obvious questions as to how it manages without one. Perhaps physics had been taken over by mathematicians who were interested in the mathematical possibilities. In fact what the paper actually says is "The introduction of a 'luminiferous ether' will prove to be superfluous *inasmuch* as the view here to be developed will not require an 'absolutely stationary space' provided with special properties..." The key word being "inasmuch". The 1920 lecture makes it clear that it was not the aether which Einstein considered superfluous but the 'absolutely stationary space' - the FoR stationary w.r.t the aether which is a part of Lorentz's theory. If Einstein's "aether without the immobility of Lorentz's" is not acceptable - and it wasn't - the whole scenario falls apart. Einstein has reproduced exactly the same maths as Lorentz, has objected to the theoretical structure of Lorentz's theory and then failed to come up with an acceptable alternative theoretical structure i.e. his attempt to come up with an improved theory has apparently failed. At this point the physics establishment changed its own rules by deciding that a theory doesn't need a theoretical structure - thus making SR acceptable without one. Getting rid of the aether was not the work of Einstein, nor the result of experiment nor some theoretical wizardry but by an arbitrary decision on the part of the physics establishment that a theory no longer needs a physical interpretation. You say: Actually Einstein's contribution was much more fundamental than that...... At least that's the idea right now that comes from Einstein's contribution. except that it was not Einstein's contribution. It was a fundamental change which the physics establishment used to get itself out of a hole having accepted a theory without proper scrutiny and not wanting to go back on its acceptance. They decided that physics theory was better off without physical interpretation because they had accepted a theory which has no credible physical causality (apart from that provided by LET which they did not like). It is dishonest, (while not strictly untrue) to say that Einstein's theory resulted in a fundamental change in the way physicists viewed the nature of physics; as that gives completely the wrong impression of Einstein's role. When physics disowned the aether it sawed through the intellectual branch it was sitting on. Everything now has to be dressed up with impressive sounding phrases and spin to cover the gaps but essentially Maxwell's equations are simply extensions of empirical relationships provided by Faraday. They can only be assumed valid under the conditions under which Faraday made his measurements - charge moving at low speed. It is the physical aether theory which it was assumed those equations were describing which leads to the MMX - which was measuring the speed of the earth w.r.t the aether not testing Maxwell's equations. The interpretation of the MMX - that every observer appears to be stationary w.r.t the aether, and the assumption of source independence both come from the physical aether theory not from the empirical relationships produced by Faraday. Certainly as far as SR is concerned I really cannot see what Einstein was supposed to have done which was in any way clever let alone give him the status of genius and whether glird shows his maths to be inept or not really doesn't matter to me. Lorentz was in my view a far better physicist than Einstein and he legitimately tried to explain why it appeared, from the MMX that every observer is stationary w.r.t the aether. Einstein simply accepted that every observer is stationary w.r.t the aether and failed to explain why. Lorentz was legitimately trying to find a fix for Maxwell's theory to account for the null result of the MMX. Einstein tried to find a different fix (and failed) when there wasn't any point anyway, Maxwell's theory having failed again re Ultraviolet catastrophe, Planck's quantization, and Einstein's own explanation of the photoelectric effect. It makes no sense to me at all. In SR Einstein ditches 3 apparently sensible and long standing axioms of physics in order to save Maxwell's aether theory when he himself has shown that the waves of Maxwell's wave in aether theory do not physically exist. It makes no sense to me that his theory should have been accepted and even less sense that that decision should not have been reversed when it was decided that the aether - for which 3 axioms of physics had been sacrificed - was a terribly bad idea and doesn't exist. I just do not accept that "it all worked out right in the end" neither do I accept that physics without physical process as a compliment to the maths is any longer a true science. -- John Kennaugh "The nature of the physicists' default was their failure to insist sufficiently strongly on the physical reality of the physical world." Dr Scott Murray I think the key to understanding Einstein's initial behaviour is this text: http://www.fourmilab.ch/etexts/einstein/specrel/www/ Albert Einstein 1905: "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. Thence we conclude that a balance-clock at the equator must go more slowly, by a very small amount, than a precisely similar clock situated at one of the poles under otherwise identical conditions." The mediocrity badly needed miracles that could convert Albert the Plagiarist into Divine Albert. And this particular miracle went well beyond the plagiarism - the conclusion that the clock at rest is running FASTER than the travelling clock had nothing to do with Lorentz transformation equations. Yet, unlike today's Einsteins, the original Einstein was tortured by guilty conscience all along: http://www.astrofind.net/documents/t...-radiation.php The Development of Our Views on the Composition and Essence of Radiation by Albert Einstein Albert Einstein 1909: "A large body of facts shows undeniably that light has certain fundamental properties that are better explained by Newton's emission theory of light than by the oscillation theory. For this reason, I believe that the next phase in the development of theoretical physics will bring us a theory of light that can be considered a fusion of the oscillation and emission theories. The purpose of the following remarks is to justify this belief and to show that a profound change in our views on the composition and essence of light is imperative.....Then the electromagnetic fields that make up light no longer appear as a state of a hypothetical medium, but rather as independent entities that the light source gives off, just as in Newton's emission theory of light......Relativity theory has changed our views on light. Light is conceived not as a manifestation of the state of some hypothetical medium, but rather as an independent entity like matter. Moreover, this theory shares with the corpuscular theory of light the unusual property that light carries inertial mass from the emitting to the absorbing object." Pentcho Valev |
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Why relativists don't understand Einstein's 1905 mathematics.
The source of relativity may be duality of time. We will always see an
explosion coming at us with a speed under the speed of light approaching us from its origin starting the time we see it exploding and not where one would calculate when it started and when it should hit us. You are probably not interested in looking at the real explanations to relativity, why things are the way they are. |
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