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EINSTEINIANA'S SCHIZOPHRENIC WORLD
"Pentcho Valev" wrote in message ... | http://www.youtube.com/watch?v=eiSpNh_e-0o&NR=1 | "Prof Brian Cox explores Time in super slow motion" | | http://www.youtube.com/watch?v=E1ExiJKbeuY | "Prof Brian Cox explores Einstein's understanding of time" The handwaving makes it all worthwhile. |
#12
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EINSTEINIANA'S SCHIZOPHRENIC WORLD
http://hiltonratcliffe.com/blog/?p=66
Hilton Ratcliffe: "A few years ago, I had the great privilege of sharing a supper table with some of the finest scientific minds of my era. Directly opposite me sat Professor Huseyin Yilmaz, formerly of the Institute for Advanced Studies at Princeton University, a hallowed and ivy-decked place where Albert Einstein had spent his later, introspective years. To his left sat the larger-than-life Professor Carroll Alley, Yilmaz's experimentalist colleague from the University of Maryland. On my right was the quietly spoken, amiable Professor Harold Puthoff, a director of the Institute for Advanced Studies at Austin in Texas. Dr Puthoff has achieved a fair measure of notoriety for his work on anti-gravity and the Zero Point Field, but that doesn't frighten me in the least. What did overawe me was the enormous scientific stature of these gentlemen, but I needn't have worried. They were to a fault courteous and accommodating, and entertained my dumb questions with remarkable patience. The conversation, once we had come to terms with the unfamiliar cuisine, was about Relativity. (...) Here were people discussing with great insight and authority the mathematical implications of the field equations in General Relativity. What's more (to my great astonishment) it sounded distinctly like they were suggesting improvements to the Gospel! I could contain myself no longer. "Professor Yilmaz," I said, glancing furtively around the room and then dropping my voice to a whisper, "does that mean Einstein was wrong?" All three gentlemen laughed spontaneously at my obvious discomfort, and Hal Puthoff put his hand good-naturedly on my shoulder. "Hilton," he said, "you don't have to hide under the table. It's no longer controversial to say that Einstein made mistakes. Most physicists accept that quite openly now." I had learned one of the most valuable lessons of my life." Kuhn would say the situation in science is pre-revolutionary, with anomalies in the leading theory accumulating and being openly discussed. He would be wrong. An internet search would show that the "finest scientific minds" have abandoned Divine Albert's Divine Theory long ago. No serious discussions, no conferences, no seminars, nothing. Only a few minds that are not so fine still defend the dead science in much the same way that the salesman proves the vitality and the beauty of the dead parrot: http://www.youtube.com/watch?v=4vuW6tQ0218 Owner: Oh yes, the, uh, the Norwegian Blue...What's,uh...What's wrong with it? Mr. Praline: I'll tell you what's wrong with it, my lad. 'E's dead, that's what's wrong with it! Owner: No, no, 'e's uh,...he's resting. Mr. Praline: Look, matey, I know a dead parrot when I see one, and I'm looking at one right now. Owner: No no he's not dead, he's, he's restin'! Remarkable bird, the Norwegian Blue, idn'it, ay? Beautiful plumage! ......................... Mr. Praline: No, I'm sorry! I'm not prepared to pursue my line of inquiry any longer as I think this is getting too silly! Note the unavoidable total frustration of anyone pursuing some rational "line of inquiry" in a schizophrenic situation. This is perhaps the main reason why Einstein's relativity has been so vital and so beautiful for so long. Pentcho Valev |
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EINSTEINIANA'S SCHIZOPHRENIC WORLD
Albert Einstein: The principle of constancy of the speed of light is a
consequence of the principle of relativity: http://bartleby.net/173/7.html Albert Einstein: "THERE is hardly a simpler law in physics than that according to which light is propagated in empty space. Every child at school knows, or believes he knows, that this propagation takes place in straight lines with a velocity c = 300,000 km./sec. (...) If a ray of light be sent along the embankment, we see from the above that the tip of the ray will be transmitted with the velocity c relative to the embankment. Now let us suppose that our railway carriage is again travelling along the railway lines with the velocity v, and that its direction is the same as that of the ray of light, but its velocity of course much less. Let us inquire about the velocity of propagation of the ray of light relative to the carriage. It is obvious that we can here apply the consideration of the previous section, since the ray of light plays the part of the man walking along relatively to the carriage. The velocity W of the man relative to the embankment is here replaced by the velocity of light relative to the embankment. w is the required velocity of light with respect to the carriage, and we have w = c - v. The velocity of propagation of a ray of light relative to the carriage thus comes out smaller than c. But this result comes into conflict with the principle of relativity set forth in Section V. For, like every other general law of nature, the law of the transmission of light in vacuo must, according to the principle of relativity, be the same for the railway carriage as reference-body as when the rails are the body of reference. But, from our above consideration, this would appear to be impossible. If every ray of light is propagated relative to the embankment with the velocity c, then for this reason it would appear that another law of propagation of light must necessarily hold with respect to the carriage - a result contradictory to the principle of relativity." David Morin: The principle of constancy of the speed of light is NOT a consequence of the principle of relativity: http://www.people.fas.harvard.edu/~djmorin/book.html Introduction to Classical Mechanics With Problems and Solutions David Morin, Cambridge University Press Chapter 11: "Given the second postulate [the principle of relativity], you might wonder if we even need the first [the principle of constancy of the speed of light]. If all inertial frames are equivalent, shouldn't the speed of light be the same in any frame? Well, no. For all we know, light might behave like a baseball. A baseball certainly doesn't have the same speed with respect to different frames, and this doesn't ruin the equivalence of the frames." Believers react to Albert Einstein's and David Morin's teachings: http://www.haverford.edu/physics/songs/divine.htm No-one's as dee-vine as Albert Einstein Not Maxwell, Curie, or Bohr! He explained the photo-electric effect, And launched quantum physics with his intellect! His fame went glo-bell, he won the Nobel -- He should have been given four! No-one's as dee-vine as Albert Einstein, Professor with brains galore! No-one could outshine Professor Einstein -- Egad, could that guy derive! He gave us special relativity, That's always made him a hero to me! Brownian motion, my true devotion, He mastered back in aught-five! No-one's as dee-vine as Albert Einstein, Professor in overdrive! http://www.youtube.com/watch?v=5PkLLXhONvQ We all believe in relativity, relativity, relativity. Yes we all believe in relativity, 8.033, relativity. Einstein's postulates imply That planes are shorter when they fly. Their clocks are slowed by time dilation And look warped from aberration. We all believe in relativity, relativity, relativity. Yes we all believe in relativity, 8.033, relativity. Pentcho Valev |
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EINSTEINIANA'S SCHIZOPHRENIC WORLD
David Morin: The intrinsic rate of clocks does vary with the
gravitational potential: http://www.people.fas.harvard.edu/~djmorin/book.html Introduction to Classical Mechanics With Problems and Solutions David Morin, Cambridge University Press, Chapter 14: http://student.fizika.org/~jsisko/Kn...Morin/CH13.PDF David Morin: "The equivalence principle has a striking consequence concerning the behavior of clocks in a gravitational field. It implies that higher clocks run faster than lower clocks. If you put a watch on top of a tower, and then stand on the ground, you will see the watch on the tower tick faster than an identical watch on your wrist. When you take the watch down and compare it to the one on your wrist, it will show more time elapsed." Banesh Hoffmann: The intrinsic rate of clocks does NOT vary with the gravitational potential: http://www.amazon.com/Relativity-Its.../dp/0486406768 Banesh Hoffmann: "In an accelerated sky laboratory, and therefore also in the corresponding earth laboratory, the frequence of arrival of light pulses is lower than the ticking rate of the upper clocks EVEN THOUGH ALL THE CLOCKS GO AT THE SAME RATE. (...) As a result the experimenter at the ceiling of the sky laboratory will see with his own eyes that the floor clock is going at a slower rate than the ceiling clock - EVEN THOUGH, AS I HAVE STRESSED, BOTH ARE GOING AT THE SAME RATE. (...) THE GRAVITATIONAL RED SHIFT DOES NOT ARISE FROM CHANGES IN THE INTRINSIC RATES OF CLOCKS. It arises from WHAT BEFALLS LIGHT SIGNALS AS THEY TRAVERSE SPACE AND TIME IN THE PRESENCE OF GRAVITATION." Believers react to David Morin's and Banesh Hoffmann's teachings: http://www.haverford.edu/physics/songs/divine.htm No-one's as dee-vine as Albert Einstein Not Maxwell, Curie, or Bohr! He explained the photo-electric effect, And launched quantum physics with his intellect! His fame went glo-bell, he won the Nobel -- He should have been given four! No-one's as dee-vine as Albert Einstein, Professor with brains galore! No-one could outshine Professor Einstein -- Egad, could that guy derive! He gave us special relativity, That's always made him a hero to me! Brownian motion, my true devotion, He mastered back in aught-five! No-one's as dee-vine as Albert Einstein, Professor in overdrive! http://www.youtube.com/watch?v=5PkLLXhONvQ We all believe in relativity, relativity, relativity. Yes we all believe in relativity, 8.033, relativity. Einstein's postulates imply That planes are shorter when they fly. Their clocks are slowed by time dilation And look warped from aberration. We all believe in relativity, relativity, relativity. Yes we all believe in relativity, 8.033, relativity. David Morin: The acceleration of the travelling twin occurring during "the turning-around period" is essential for explaining the old age of the sedentary twin but, on the other hand, "a discussion of acceleration is not required to quantitatively understand the [twin] paradox": http://www.people.fas.harvard.edu/~djmorin/book.html Introduction to Classical Mechanics With Problems and Solutions David Morin, Cambridge University Press, Chapter 11, p. 14: "For the entire outward and return parts of the trip, B does observe A's clock running slow, but enough strangeness occurs during the turning-around period to make A end up older. Note, however, that a discussion of acceleration is not required to quantitatively understand the paradox, as Problem 11.2 shows." The ecstasy reaches its maximum: believers tumble to the floor, start tearing their clothes and go into convulsions. Pentcho Valev |
#15
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EINSTEINIANA'S SCHIZOPHRENIC WORLD
Stéphane Durand: The relativity theory cannot be false (more
precisely, it is the only possible theory) because "it is impossible to detect a movement at constant speed": http://www.crm.umontreal.ca/~durand/club-math-2011.pdf Stéphane Durand: "Puis nous expliquerons pourquoi la théorie de la relativité ne peut pas être fausse (du moins, dans notre univers). Plus précisément, dans un univers où il est impossible de détecter un mouvement à vitesse constante (comme c'est le cas dans le nôtre), la théorie de la relativité est la seule possible; avec comme cas limite la physique galiléenne." Believers react to Stéphane Durand's teaching: http://www.haverford.edu/physics/songs/divine.htm No-one's as dee-vine as Albert Einstein Not Maxwell, Curie, or Bohr! He explained the photo-electric effect, And launched quantum physics with his intellect! His fame went glo-bell, he won the Nobel -- He should have been given four! No-one's as dee-vine as Albert Einstein, Professor with brains galore! No-one could outshine Professor Einstein -- Egad, could that guy derive! He gave us special relativity, That's always made him a hero to me! Brownian motion, my true devotion, He mastered back in aught-five! No-one's as dee-vine as Albert Einstein, Professor in overdrive! http://www.youtube.com/watch?v=5PkLLXhONvQ We all believe in relativity, relativity, relativity. Yes we all believe in relativity, 8.033, relativity. Einstein's postulates imply That planes are shorter when they fly. Their clocks are slowed by time dilation And look warped from aberration. We all believe in relativity, relativity, relativity. Yes we all believe in relativity, 8.033, relativity. Steve Carlip: The principle of constancy of the speed of light cannot be false because the speed of light is constant by definition. The fact that, in a gravitational field, the speed of light is both variable and constant makes the principle absolutely irrefutable: http://math.ucr.edu/home/baez/physic..._of_light.html Steve Carlip: "Is c, the speed of light in vacuum, constant? At the 1983 Conference Generale des Poids et Mesures, the following SI (Systeme International) definition of the metre was adopted: The metre is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second. This defines the speed of light in vacuum to be exactly 299,792,458 m/s. This provides a very short answer to the question "Is c constant": Yes, c is constant by definition! (...) Einstein went on to discover a more general theory of relativity which explained gravity in terms of curved spacetime, and he talked about the speed of light changing in this new theory. In the 1920 book "Relativity: the special and general theory" he wrote: ". . . according to the general theory of relativity, the law of the constancy of the velocity of light in vacuo, which constitutes one of the two fundamental assumptions in the special theory of relativity [. . .] cannot claim any unlimited validity. A curvature of rays of light can only take place when the velocity of propagation of light varies with position." Since Einstein talks of velocity (a vector quantity: speed with direction) rather than speed alone, it is not clear that he meant the speed will change, but the reference to special relativity suggests that he did mean so. This interpretation is perfectly valid and makes good physical sense, but a more modern interpretation is that the speed of light is constant in general relativity." The ecstasy reaches its maximum: believers tumble to the floor, start tearing their clothes and go into convulsions. Pentcho Valev |
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