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Albert Einstein: "In the second place our result shows that, 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 and to which we have already frequently referred, 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. Now we might think that as a consequence of this, the special theory of relativity and with it the whole theory of relativity would be laid in the dust. But in reality this is not the case. We can only conclude that the special theory of relativity cannot claim an unlimited domain of validity; its result hold only so long as we are able to disregard the influences of gravitational fields on the phenomena (e.g. of light)." Einstein's "logic" in the above text: In a gravitational field, the speed of light "varies with position", that is, with the gravitational potential. Therefore, if the gravitational potential does not vary with position (if the field is zero), then the speed of light is constant. This means that Einstein's 1905 constant-speed-of-light postulate is true. Initially, this "logic" makes believers sing "Divine Einstein" and "Yes we all believe in relativity, relativity, relativity": 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. In the end the ecstasy gets uncontrollable - believers tumble to the floor, start tearing their clothes and go into convulsions. A VALID argument based on Einstein's equivalence principle (Einstein was well aware of this VALID argument): If the speed of light varies with the gravitational potential, then, in the absence of a gravitational field, the speed of light varies with the speed of the light source. This means that Einstein's 1905 constant-speed-of-light postulate is false. The following application of Einstein's equivalence principle might prove instructive: A light source on top of a tower of height h emits light with frequency f and speed c (relative to the source). The light reaches an observer on the ground with frequency f' and speed c' (relative to the observer). Equivalently, a light source at the front end of an accelerating rocket of length h and accelaration g emits light with frequency f and speed c (relative to the source). The light reaches an observer at the back end with frequency f' and speed c' (relative to the observer). Is c' equal to c or is c' different from c? That is, is Einstein's 1905 constant-speed-of-light postulate correct or not? No priest in Einsteiniana would directly answer this fatal question - the crimestop is absolute in this case: http://www.liferesearchuniversal.com...html#seventeen George Orwell: "Crimestop means the faculty of stopping short, as though by instinct, at the threshold of any dangerous thought. It includes the power of not grasping analogies, of failing to perceive logical errors, of misunderstanding the simplest arguments if they are inimical to Ingsoc, and of being bored or repelled by any train of thought which is capable of leading in a heretical direction. Crimestop, in short, means protective stupidity." Still Einsteiniana's priests find it safe to use, in calculations, the correct answer to the fatal question: The correct answer: c'c as predicted by Newton's emission theory of light. Consider equation (13.2) on p. 3 in David Morin's text: http://student.fizika.org/~jsisko/Kn...Morin/CH13.PDF f' = f(1+v/c) = f(1+gh/c^2) (13.2) where v is the relative speed of the light source (at the moment of emission) and the observer (at the moment of reception) in the rocket scenario. By combining this equation with: (frequency) = (speed of light)/(wavelength) we obtain THE FUNDAMENTAL EQUATIONS OF NEWTON'S EMISSION THEORY OF LIGHT: c' = c+v = c(1+gh/c^2) which CONTRADICT EINSTEIN'S 1905 FALSE CONSTANT-SPEED-OF-LIGHT POSTULATE. Einstein explicitly used the equation c'=c(1+gh/c^2) in the period 1907-1915, then replaced it with c'=c(1+2gh/c^2), which means that in any version of Einstein's general relativity we have c'c. David Morin's text referred to above reappears as Chapter 14 in: http://www.people.fas.harvard.edu/~djmorin/book.html Introduction to Classical Mechanics With Problems and Solutions David Morin, Cambridge University Press Pentcho Valev |
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