![]() |
|
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
![]()
An excerpt from COSMIC HORIZONS: ASTRONOMY AT THE CUTTING EDGE, edited
by Steven Soter and Neil deGrasse Tyson, a publication of the New Press. © 2000 American Museum of Natural History. To order the book, call 1-800-233-4830, or go to http://www.amnh.org/education/resour...l/web/buybook/ http://www.amnh.org/education/resour...s_michell.html "Michell accepted Newton's theory that light consists of small material particles. He reasoned that such particles, emerging from the surface of a star, would have their speed reduced by the star's gravitational pull, just like projectiles fired upward from the Earth. (...) Michell got the right answer, although he was wrong about one point. We now know, from Einstein's relativity theory of 1905, that light moves through space at a constant speed, regardless of the local strength of gravity." Needless to say, in 1905 Einstein did not say anything like "light moves through space at a constant speed, regardless of the local strength of gravity". Rather, from 1907 on, he claimed that, in a gravitational field, the speed of light is VARIABLE, not constant. In 1911 Einstein was explicitly using Newton's emission theory of light in order to show how the speed of light varies with the gravitational potential: ttp://www.physlink.com/Education/AskExperts/ae13.cfm "So, it is absolutely true that the speed of light is not constant in a gravitational field [which, by the equivalence principle, applies as well to accelerating (non-inertial) frames of reference]. If this were not so, there would be no bending of light by the gravitational field of stars....Indeed, this is exactly how Einstein did the calculation in: 'On the Influence of Gravitation on the Propagation of Light,' Annalen der Physik, 35, 1911. which predated the full formal development of general relativity by about four years. This paper is widely available in English. You can find a copy beginning on page 99 of the Dover book 'The Principle of Relativity.' You will find in section 3 of that paper, Einstein's derivation of the (variable) speed of light in a gravitational potential, eqn (3). The result is, c' = c0 ( 1 + V / c^2 ) where V is the gravitational potential relative to the point where the speed of light c0 is measured." http://www.blazelabs.com/f-g-gcont.asp "So, faced with this evidence most readers must be wondering why we learn about the importance of the constancy of speed of light. Did Einstein miss this? Sometimes I find out that what's written in our textbooks is just a biased version taken from the original work, so after searching within the original text of the theory of GR by Einstein, I found this quote: "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 results hold only so long as we are able to disregard the influences of gravitational fields on the phenomena (e.g. of light)." - Albert Einstein (1879-1955) - The General Theory of Relativity: Chapter 22 - A Few Inferences from the General Principle of Relativity-. Today we find that since the Special Theory of Relativity unfortunately became part of the so called mainstream science, it is considered a sacrilege to even suggest that the speed of light be anything other than a constant. This is somewhat surprising since even Einstein himself suggested in a paper "On the Influence of Gravitation on the Propagation of Light," Annalen der Physik, 35, 1911, that the speed of light might vary with the gravitational potential. Indeed, the variation of the speed of light in a vacuum or space is explicitly shown in Einstein's calculation for the angle at which light should bend upon the influence of gravity. One can find his calculation in his paper. The result is c'=c(1+V/c^2) where V is the gravitational potential relative to the point where the measurement is taken. 1+V/c^2 is also known as the GRAVITATIONAL REDSHIFT FACTOR." In 1915 Einstein managed to get rid of Newton's emission theory of light by replacing the equation c'=c(1+V/c^2) with c'=c(1+2V/c^2), which is tantamount to replacing 2+2=4 with 2+2=5: http://www.mathpages.com/rr/s6-01/6-01.htm "In geometrical units we define c_0 = 1, so Einstein's 1911 formula can be written simply as c=1+phi. However, this formula for the speed of light (not to mention this whole approach to gravity) turned out to be incorrect, as Einstein realized during the years leading up to 1915 and the completion of the general theory. In fact, the general theory of relativity doesn't give any equation for the speed of light at a particular location, because the effect of gravity cannot be represented by a simple scalar field of c values. Instead, the "speed of light" at a each point depends on the direction of the light ray through that point, as well as on the choice of coordinate systems, so we can't generally talk about the value of c at a given point in a non- vanishing gravitational field. However, if we consider just radial light rays near a spherically symmetrical (and non- rotating) mass, and if we agree to use a specific set of coordinates, namely those in which the metric coefficients are independent of t, then we can read a formula analogous to Einstein's 1911 formula directly from the Schwarzschild metric. (...) In the Newtonian limit the classical gravitational potential at a distance r from mass m is phi=-m/r, so if we let c_r = dr/dt denote the radial speed of light in Schwarzschild coordinates, we have c_r =1+2phi, which corresponds to Einstein's 1911 equation, except that we have a factor of 2 instead of 1 on the potential term." http://www.speed-light.info/speed_of_light_variable.htm "Einstein wrote this paper in 1911 in German (download from: http://www.physik.uni-augsburg.de/an...35_898-908.pdf ). It predated the full formal development of general relativity by about four years. You can find an English translation of this paper in the Dover book 'The Principle of Relativity' beginning on page 99; you will find in section 3 of that paper Einstein's derivation of the variable speed of light in a gravitational potential, eqn (3). The result is: c'=c0(1+phi/c^2) where phi is the gravitational potential relative to the point where the speed of light co is measured......You can find a more sophisticated derivation later by Einstein (1955) from the full theory of general relativity in the weak field approximation....For the 1955 results but not in coordinates see page 93, eqn (6.28): c(r)=[1+2phi(r)/c^2]c. Namely the 1955 approximation shows a variation in km/sec twice as much as first predicted in 1911." http://www.online-literature.com/orwell/1984/ George Orwell "1984": "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?" Pentcho Valev |
#2
|
|||
|
|||
![]() "Pentcho Valev" wrote in message ... An excerpt from COSMIC HORIZONS: ASTRONOMY AT THE CUTTING EDGE, edited by Steven Soter and Neil deGrasse Tyson, a publication of the New Press. © 2000 American Museum of Natural History. To order the book, call 1-800-233-4830, or go to http://www.amnh.org/education/resour...l/web/buybook/ http://www.amnh.org/education/resour...s_michell.html "Michell accepted Newton's theory that light consists of small material particles. He reasoned that such particles, emerging from the surface of a star, would have their speed reduced by the star's gravitational pull, just like projectiles fired upward from the Earth. (...) Michell got the right answer, although he was wrong about one point. We now know, from Einstein's relativity theory of 1905, that light moves through space at a constant speed, regardless of the local strength of gravity." Needless to say, in 1905 Einstein did not say anything like "light moves through space at a constant speed, regardless of the local strength of gravity". ________________________________________ So far that is correct, as far as I know. Rather, from 1907 on, he claimed that, in a gravitational field, the speed of light is VARIABLE, not constant. _______________________________________ I actually doubt that Einstein would have said that, as it is so simplictic as to be false. Specifically, an observer can be in as strong a gravitational field as you like, but as long as the observer is in an intertial reference frame (eg in orbit), they will always measure the local speed of light as c. Have you a cite to Einstein's exact words? |
#3
|
|||
|
|||
![]()
The same lie (the speed of light is constant in a gravitational field)
advanced by Stephen Hawking but he superimposes another lie by claiming that the Michelson-Morley experiment confirmed the constancy of the speed of light (originally, prior to introducing length contraction, the ad hoc auxiliary hypothesis, the Michelson-Morley experiment straightforwardly confirmed the variation of the speed of light with the speed of the light source as predicted by Newton's emission theory of light): http://www.amazon.com/Brief-History-.../dp/0553380168 Stephen Hawking, "A Brief History of Time", Chapter 6: "Under the theory that light is made up of waves, it was not clear how it would respond to gravity. But if light is composed of particles, one might expect them to be affected by gravity in the same way that cannonballs, rockets, and planets are.....In fact, it is not really consistent to treat light like cannonballs in Newtons theory of gravity because the speed of light is fixed. (A cannonball fired upward from the earth will be slowed down by gravity and will eventually stop and fall back; a photon, however, must continue upward at a constant speed...)" http://www.hawking.org.uk/index.php?...64&It emid=66 Stephen Hawking: "Interestingly enough, Laplace himself wrote a paper in 1799 on how some stars could have a gravitational field so strong that light could not escape, but would be dragged back onto the star. He even calculated that a star of the same density as the Sun, but two hundred and fifty times the size, would have this property. But although Laplace may not have realised it, the same idea had been put forward 16 years earlier by a Cambridge man, John Mitchell, in a paper in the Philosophical Transactions of the Royal Society. Both Mitchell and Laplace thought of light as consisting of particles, rather like cannon balls, that could be slowed down by gravity, and made to fall back on the star. But a famous experiment, carried out by two Americans, Michelson and Morley in 1887, showed that light always travelled at a speed of one hundred and eighty six thousand miles a second, no matter where it came from. How then could gravity slow down light, and make it fall back." Pentcho Valev wrote: An excerpt from COSMIC HORIZONS: ASTRONOMY AT THE CUTTING EDGE, edited by Steven Soter and Neil deGrasse Tyson, a publication of the New Press. © 2000 American Museum of Natural History. To order the book, call 1-800-233-4830, or go to http://www.amnh.org/education/resour...l/web/buybook/ http://www.amnh.org/education/resour...s_michell.html "Michell accepted Newton's theory that light consists of small material particles. He reasoned that such particles, emerging from the surface of a star, would have their speed reduced by the star's gravitational pull, just like projectiles fired upward from the Earth. (...) Michell got the right answer, although he was wrong about one point. We now know, from Einstein's relativity theory of 1905, that light moves through space at a constant speed, regardless of the local strength of gravity." Needless to say, in 1905 Einstein did not say anything like "light moves through space at a constant speed, regardless of the local strength of gravity". Rather, from 1907 on, he claimed that, in a gravitational field, the speed of light is VARIABLE, not constant. In 1911 Einstein was explicitly using Newton's emission theory of light in order to show how the speed of light varies with the gravitational potential: http://www.physlink.com/Education/AskExperts/ae13.cfm "So, it is absolutely true that the speed of light is not constant in a gravitational field [which, by the equivalence principle, applies as well to accelerating (non-inertial) frames of reference]. If this were not so, there would be no bending of light by the gravitational field of stars....Indeed, this is exactly how Einstein did the calculation in: 'On the Influence of Gravitation on the Propagation of Light,' Annalen der Physik, 35, 1911. which predated the full formal development of general relativity by about four years. This paper is widely available in English. You can find a copy beginning on page 99 of the Dover book 'The Principle of Relativity.' You will find in section 3 of that paper, Einstein's derivation of the (variable) speed of light in a gravitational potential, eqn (3). The result is, c' = c0 ( 1 + V / c^2 ) where V is the gravitational potential relative to the point where the speed of light c0 is measured." http://www.blazelabs.com/f-g-gcont.asp "So, faced with this evidence most readers must be wondering why we learn about the importance of the constancy of speed of light. Did Einstein miss this? Sometimes I find out that what's written in our textbooks is just a biased version taken from the original work, so after searching within the original text of the theory of GR by Einstein, I found this quote: "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 results hold only so long as we are able to disregard the influences of gravitational fields on the phenomena (e.g. of light)." - Albert Einstein (1879-1955) - The General Theory of Relativity: Chapter 22 - A Few Inferences from the General Principle of Relativity-. Today we find that since the Special Theory of Relativity unfortunately became part of the so called mainstream science, it is considered a sacrilege to even suggest that the speed of light be anything other than a constant. This is somewhat surprising since even Einstein himself suggested in a paper "On the Influence of Gravitation on the Propagation of Light," Annalen der Physik, 35, 1911, that the speed of light might vary with the gravitational potential. Indeed, the variation of the speed of light in a vacuum or space is explicitly shown in Einstein's calculation for the angle at which light should bend upon the influence of gravity. One can find his calculation in his paper. The result is c'=c(1+V/c^2) where V is the gravitational potential relative to the point where the measurement is taken. 1+V/c^2 is also known as the GRAVITATIONAL REDSHIFT FACTOR." In 1915 Einstein managed to get rid of Newton's emission theory of light by replacing the equation c'=c(1+V/c^2) with c'=c(1+2V/c^2), which is tantamount to replacing 2+2=4 with 2+2=5: http://www.mathpages.com/rr/s6-01/6-01.htm "In geometrical units we define c_0 = 1, so Einstein's 1911 formula can be written simply as c=1+phi. However, this formula for the speed of light (not to mention this whole approach to gravity) turned out to be incorrect, as Einstein realized during the years leading up to 1915 and the completion of the general theory. In fact, the general theory of relativity doesn't give any equation for the speed of light at a particular location, because the effect of gravity cannot be represented by a simple scalar field of c values. Instead, the "speed of light" at a each point depends on the direction of the light ray through that point, as well as on the choice of coordinate systems, so we can't generally talk about the value of c at a given point in a non- vanishing gravitational field. However, if we consider just radial light rays near a spherically symmetrical (and non- rotating) mass, and if we agree to use a specific set of coordinates, namely those in which the metric coefficients are independent of t, then we can read a formula analogous to Einstein's 1911 formula directly from the Schwarzschild metric. (...) In the Newtonian limit the classical gravitational potential at a distance r from mass m is phi=-m/r, so if we let c_r = dr/dt denote the radial speed of light in Schwarzschild coordinates, we have c_r =1+2phi, which corresponds to Einstein's 1911 equation, except that we have a factor of 2 instead of 1 on the potential term." http://www.speed-light.info/speed_of_light_variable.htm "Einstein wrote this paper in 1911 in German (download from: http://www.physik.uni-augsburg.de/an...35_898-908.pdf ). It predated the full formal development of general relativity by about four years. You can find an English translation of this paper in the Dover book 'The Principle of Relativity' beginning on page 99; you will find in section 3 of that paper Einstein's derivation of the variable speed of light in a gravitational potential, eqn (3). The result is: c'=c0(1+phi/c^2) where phi is the gravitational potential relative to the point where the speed of light co is measured......You can find a more sophisticated derivation later by Einstein (1955) from the full theory of general relativity in the weak field approximation....For the 1955 results but not in coordinates see page 93, eqn (6.28): c(r)=[1+2phi(r)/c^2]c. Namely the 1955 approximation shows a variation in km/sec twice as much as first predicted in 1911." http://www.online-literature.com/orwell/1984/ George Orwell "1984": "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?" Pentcho Valev |
#4
|
|||
|
|||
![]()
You stand on the beach and the wavecrests hit your feet with frequency
F and speed V. You know that F=V/L where L is the wavelength - the distance between the crests. Then you start wading against the waves with speed v. This means that the wavecrests now hit your feet with speed (V+v); the frequency increases accordingly: F'=(V+v)/L ; F'F Not so, say Einsteinians knowing that, for light waves, (V+v) is to be replaced by (c+v): a replacement which, if officially admitted, would mark the end of Einsteiniana (the speed of light varies with the speed of the observer). Then Einsteinians advance the most blatant lie: the wavecrests continue to hit your feet with CONSTANT speed V while the increase in frequency is accompanied with an IDIOTIC decrease in wavelength: F'=V/L' ; L'=LV/(V+v) http://sampit.geol.sc.edu/Doppler.html "Moving observer: A man is standing on the beach, watching the tide. The waves are washing into the shore and over his feet with a constant frequency and wavelength. However, if he begins walking out into the ocean, the waves will begin hitting him more frequently, leading him to perceive that the wavelength of the waves has decreased. Again, this phenomenon is due to the fact that the source and the observer are not the in the same frame of reference. Although the wavelength appears to have decreased to the man, the wavelength would appear constant to a jellyfish floating along with the tide." http://www.pitt.edu/~jdnorton/teachi...ang/index.html John Norton: "Here's a light wave and an observer. If the observer were to hurry towards the source of the light, the observer would now pass wavecrests more frequently than the resting observer. That would mean that moving observer would find the frequency of the light to have increased (AND CORRESPONDINGLY FOR THE WAVELENGTH - THE DISTANCE BETWEEN CRESTS - TO HAVE DECREASED)." All along believers invariably sing "Divine Einstein" and "Yes we all believe in relativity, relativity, relativity": "YES WE ALL BELIEVE IN RELATIVITY, RELATIVITY, RELATIVITY" http://www.youtube.com/watch?v=5PkLLXhONvQ "DIVINE EINSTEIN" (No-one's as dee-vine as Albert Einstein not Maxwell, Curie, or B-o-o- ohr!) http://www.haverford.edu/physics-astro/songs/divine.htm Pentcho Valev |
#5
|
|||
|
|||
![]()
http://sampit.geol.sc.edu/Doppler.html
"Moving observer: A man is standing on the beach, watching the tide. The waves are washing into the shore and over his feet with a constant frequency and wavelength. However, if he begins walking out into the ocean, the waves will begin hitting him more frequently, leading him to perceive that the wavelength of the waves has decreased. Again, this phenomenon is due to the fact that the source and the observer are not the in the same frame of reference. Although the wavelength appears to have decreased to the man, the wavelength would appear constant to a jellyfish floating along with the tide." Ahh yes. If you could find such a "jellyfish" for light; an object that is demonstrably at rest with the medium through which light travels, then you would destroy SR. You haven't actually got a jellyfish, have you? Let us know if you find one. |
#6
|
|||
|
|||
![]()
the constant is the speed in vacuum, only, but
vacuum is strictly relative (to the refractive index), as *almost* dyscovered by Pascal. http://sampit.geol.sc.edu/Doppler.html If you could find such a "jellyfish" for light; an object that is thus: it seems that all of Russell's paradoxes were illinguistic, not properly tensed. no barber cuts his own hair e.g.; he'd go to the next village. thus: if you cannot take the heat re M&M, get out of the frying pan: http://21stcenturysciencetech.com/sample.html thus: re "spheres of nanothermite," do either of you know the primary use of thermite, and what it is made of? thus: I respect his right to wait til "P3" is out, but a precis would be appreciated. and, please, don't just *say* that Michelson, Morley et al go "no" results, because they actually got some (small) seasonal anomalies -- that goes for you, two, Uncle Al! Experimental constraints on Special Relativity --Light: A History! http://wlym.com |
#7
|
|||
|
|||
![]()
A temporarily honest Einsteinian:
http://www.lauralee.com/news/relativitychallenged.htm Question: Jumping off a bandwagon is risky - surely you could have committed career suicide by suggesting something as radical as a variable speed of light? Magueijo: That's true. Maybe I wouldn't have been so carefree if I hadn't had this Royal Society fellowship: it gives a safety net for 10 years. You can go anywhere and do whatever you want as long as you're productive. Question: So you're free to be the angry young man of physics? Magueijo: Maybe it comes across that I'm bitter and twisted, but if you're reading a book, the body language is lost. You're talking to me face to face: you can see I'm really playing with all this. I'm not an angry young man, I'm just being honest. There's no hard feelings. I may say offensive things, but everything is very good natured. Question: So why should the speed of light vary? Magueijo: It's more useful to turn that round. The issue is more why should the speed of light be constant? The constancy of the speed of light is the central thing in relativity but we have lots of problems in theoretical physics, and these probably result from assuming that relativity works all the time. Relativity must collapse at some point... Like all Einsteinians, Magueijo is a practitioner of doublethink, that is, in his thoughts, the lie is "always one leap ahead of the truth": http://www.amazon.com/Faster-Than-Sp.../dp/0738205257 Joao Magueijo: "I am by profession a theoretical physicist. By every definition I am a fully credentialed scholar-graduate work and Ph.D. at Cambridge, followed by a very prestigious research fellowship at St. John's College, Cambridge (Paul Dirac and Abdus Salam formerly held this fellowship), then a Royal Society research fellow. Now I'm a lecturer (the equivalent of a tenured professor in the United States) at Imperial College. (...) A missile fired from a plane moves faster than one fired from the ground because the plane's speed adds to the missile's speed. If I throw something forward on a moving train, its speed with respect to the platform is the speed of that object plus that of the train. You might think that the same should happen to light: Light flashed from a train should travel faster. However, what the Michelson-Morley experiments showed was that this was not the case: Light always moves stubbornly at the same speed. This means that if I take a light ray and ask several observers moving with respect to each other to measure the speed of this light ray, they will all agree on the same apparent speed!" http://www.liferesearchuniversal.com...html#seventeen George Orwell: "Doublethink means the power of holding two contradictory beliefs in one's mind simultaneously, and accepting both of them. The Party intellectual knows in which direction his memories must be altered; he therefore knows that he is playing tricks with reality; but by the exercise of doublethink he also satisfies himself that reality is not violated. The process has to be conscious, or it would not be carried out with sufficient precision, but it also has to be unconscious, or it would bring with it a feeling of falsity and hence of guilt. Doublethink lies at the very heart of Ingsoc, since the essential act of the Party is to use conscious deception while retaining the firmness of purpose that goes with complete honesty. To tell deliberate lies while genuinely believing in them, to forget any fact that has become inconvenient, and then, when it becomes necessary again, to draw it back from oblivion for just so long as it is needed, to deny the existence of objective reality and all the while to take account of the reality which one denies - all this is indispensably necessary. Even in using the word doublethink it is necessary to exercise doublethink. For by using the word one admits that one is tampering with reality; by a fresh act of doublethink one erases this knowledge ; and so on indefinitely, with the lie always one leap ahead of the truth." http://www.liferesearchuniversal.com...html#seventeen George Orwell: "It need hardly be said that the subtlest practitioners of doublethink are those who invented doublethink and know that it is a vast system of mental cheating. In our society, those who have the best knowledge of what is happening are also those who are furthest from seeing the world as it is. In general, the greater the understanding, the greater the delusion ; the more intelligent, the less sane." Pentcho Valev wrote: You stand on the beach and the wavecrests hit your feet with frequency F and speed V. You know that F=V/L where L is the wavelength - the distance between the crests. Then you start wading against the waves with speed v. This means that the wavecrests now hit your feet with speed (V+v); the frequency increases accordingly: F'=(V+v)/L ; F'F Not so, say Einsteinians knowing that, for light waves, (V+v) is to be replaced by (c+v): a replacement which, if officially admitted, would mark the end of Einsteiniana (the speed of light varies with the speed of the observer). Then Einsteinians advance the most blatant lie: the wavecrests continue to hit your feet with CONSTANT speed V while the increase in frequency is accompanied with an IDIOTIC decrease in wavelength: F'=V/L' ; L'=LV/(V+v) http://sampit.geol.sc.edu/Doppler.html "Moving observer: A man is standing on the beach, watching the tide. The waves are washing into the shore and over his feet with a constant frequency and wavelength. However, if he begins walking out into the ocean, the waves will begin hitting him more frequently, leading him to perceive that the wavelength of the waves has decreased. Again, this phenomenon is due to the fact that the source and the observer are not the in the same frame of reference. Although the wavelength appears to have decreased to the man, the wavelength would appear constant to a jellyfish floating along with the tide." http://www.pitt.edu/~jdnorton/teachi...ang/index.html John Norton: "Here's a light wave and an observer. If the observer were to hurry towards the source of the light, the observer would now pass wavecrests more frequently than the resting observer. That would mean that moving observer would find the frequency of the light to have increased (AND CORRESPONDINGLY FOR THE WAVELENGTH - THE DISTANCE BETWEEN CRESTS - TO HAVE DECREASED)." All along believers invariably sing "Divine Einstein" and "Yes we all believe in relativity, relativity, relativity": "YES WE ALL BELIEVE IN RELATIVITY, RELATIVITY, RELATIVITY" http://www.youtube.com/watch?v=5PkLLXhONvQ "DIVINE EINSTEIN" (No-one's as dee-vine as Albert Einstein not Maxwell, Curie, or B-o-o- ohr!) http://www.haverford.edu/physics-astro/songs/divine.htm Pentcho Valev |
#8
|
|||
|
|||
![]()
Other examples of temporary honesty in Einsteiniana:
http://www.prospect-magazine.co.uk/a...ls.php?id=5538 Paul Davies: "Was Einstein wrong? Einstein's famous equation E=mc2 is the only scientific formula known to just about everyone. The "c" here stands for the speed of light. It is one of the most fundamental of the basic constants of physics. Or is it? In recent years a few maverick scientists have claimed that the speed of light might not be constant at all. Shock, horror! Does this mean the next Great Revolution in Science is just around the corner?" http://www.freerepublic.com/focus/f-news/519406/posts "A GROUP of astronomers and cosmologists has warned that the laws thought to govern the universe, including Albert Einstein's theory of relativity, must be rewritten. The group, which includes Professor Stephen Hawking and Sir Martin Rees, the astronomer royal, say such laws may only work for our universe but not in others that are now also thought to exist. "It is becoming increasingly likely that the rules we had thought were fundamental through time and space are actually just bylaws for our bit of it," said Rees, whose new book, Our Cosmic Habitat, is published next month. "Creation is emerging as even stranger than we thought." AMONG THE IDEAS FACING REVISION IS EINSTEIN'S BELIEF THAT THE SPEED OF LIGHT MUST ALWAYS BE THE SAME - 186,000 miles a second in a vacuum. There is growing evidence that light moved much faster during the early stages of our universe. Rees, Hawking and others are so concerned at the impact of such ideas that they recently organised a private conference in Cambridge for more than 30 leading cosmologists." http://www.nytimes.com/2002/12/31/sc...-relative.html "As propounded by Einstein as an audaciously confident young patent clerk in 1905, relativity declares that the laws of physics, and in particular the speed of light -- 186,000 miles per second -- are the same no matter where you are or how fast you are moving. Generations of students and philosophers have struggled with the paradoxical consequences of Einstein's deceptively simple notion, which underlies all of modern physics and technology, wrestling with clocks that speed up and slow down, yardsticks that contract and expand and bad jokes using the word "relative."......"Perhaps relativity is too restrictive for what we need in quantum gravity," Dr. Magueijo said. "WE NEED TO DROP A POSTULATE, PERHAPS THE CONSTANCY OF THE SPEED OF LIGHT." http://philsci-archive.pitt.edu/arch.../02/Norton.pdf John Norton: "Einstein regarded the Michelson-Morley experiment as evidence for the principle of relativity, whereas later writers almost universally use it as support for the light postulate of special relativity......THE MICHELSON-MORLEY EXPERIMENT IS FULLY COMPATIBLE WITH AN EMISSION THEORY OF LIGHT THAT CONTRADICTS THE LIGHT POSTULATE." http://www.mfo.de/programme/schedule...WR_2006_10.pdf Jean Eisenstaedt: "At the end of the 18th century, a natural extension of Newton's dynamics to light was developed but immediately forgotten. A body of works completed the Principia with a relativistic optics of moving bodies, the discovery of the Doppler-Fizeau effect some sixty years before Doppler, and many other effects and ideas which represent a fascinating preamble to Einstein relativities. It was simply supposed that 'a body-light', as Newton named it, was subject to the whole dynamics of the Principia in much the same way as were material particles; thus it was subject to the Galilean relativity and its velocity was supposed to be variable. Of course it was subject to the short range 'refringent' force of the corpuscular theory of light -- which is part of the Principia-- but also to the long range force of gravitation which induces Newton's theory of gravitation. The fact that the 'mass' of a corpuscle of light was not known did not constitute a problem since it does not appear in the Newtonian (or Einsteinian) equations of motion. It was precisely what John Michell (1724-1793), Robert Blair (1748-1828), Johann G. von Soldner (1776-1833) and François Arago (1786-1853) were to do at the end of the 18th century and the beginning the 19th century in the context of Newton's dynamics. Actually this 'completed' Newtonian theory of light and material corpuscle seems to have been implicitly accepted at the time. In such a Newtonian context, not only Soldner's calculation of the deviation of light in a gravitational field was understood, but also dark bodies (cousins of black holes). A natural (Galilean and thus relativistic) optics of moving bodies was also developed which easily explained aberration and implied as well the essence of what we call today the Doppler effect. Moreover, at the same time the structure of -- but also the questions raised by-- the Michelson experiment was understood. Most of this corpus has long been forgotten. The Michell-Blair-Arago effect, prior to Doppler's effect, is entirely unknown to physicists and historians. As to the influence of gravitation on light, the story was very superficially known but had never been studied in any detail. Moreover, the existence of a theory dealing with light, relativity and gravitation, embedded in Newton's Principia was completely ignored by physicists and by historians as well. But it was a simple and natural way to deal with the question of light, relativity (and gravitation) in a Newtonian context." Pentcho Valev wrote: A temporarily honest Einsteinian: http://www.lauralee.com/news/relativitychallenged.htm Question: Jumping off a bandwagon is risky - surely you could have committed career suicide by suggesting something as radical as a variable speed of light? Magueijo: That's true. Maybe I wouldn't have been so carefree if I hadn't had this Royal Society fellowship: it gives a safety net for 10 years. You can go anywhere and do whatever you want as long as you're productive. Question: So you're free to be the angry young man of physics? Magueijo: Maybe it comes across that I'm bitter and twisted, but if you're reading a book, the body language is lost. You're talking to me face to face: you can see I'm really playing with all this. I'm not an angry young man, I'm just being honest. There's no hard feelings. I may say offensive things, but everything is very good natured. Question: So why should the speed of light vary? Magueijo: It's more useful to turn that round. The issue is more why should the speed of light be constant? The constancy of the speed of light is the central thing in relativity but we have lots of problems in theoretical physics, and these probably result from assuming that relativity works all the time. Relativity must collapse at some point... Like all Einsteinians, Magueijo is a practitioner of doublethink, that is, in his thoughts, the lie is "always one leap ahead of the truth": http://www.amazon.com/Faster-Than-Sp.../dp/0738205257 Joao Magueijo: "I am by profession a theoretical physicist. By every definition I am a fully credentialed scholar-graduate work and Ph.D. at Cambridge, followed by a very prestigious research fellowship at St. John's College, Cambridge (Paul Dirac and Abdus Salam formerly held this fellowship), then a Royal Society research fellow. Now I'm a lecturer (the equivalent of a tenured professor in the United States) at Imperial College. (...) A missile fired from a plane moves faster than one fired from the ground because the plane's speed adds to the missile's speed. If I throw something forward on a moving train, its speed with respect to the platform is the speed of that object plus that of the train. You might think that the same should happen to light: Light flashed from a train should travel faster. However, what the Michelson-Morley experiments showed was that this was not the case: Light always moves stubbornly at the same speed. This means that if I take a light ray and ask several observers moving with respect to each other to measure the speed of this light ray, they will all agree on the same apparent speed!" http://www.liferesearchuniversal.com...html#seventeen George Orwell: "Doublethink means the power of holding two contradictory beliefs in one's mind simultaneously, and accepting both of them. The Party intellectual knows in which direction his memories must be altered; he therefore knows that he is playing tricks with reality; but by the exercise of doublethink he also satisfies himself that reality is not violated. The process has to be conscious, or it would not be carried out with sufficient precision, but it also has to be unconscious, or it would bring with it a feeling of falsity and hence of guilt. Doublethink lies at the very heart of Ingsoc, since the essential act of the Party is to use conscious deception while retaining the firmness of purpose that goes with complete honesty. To tell deliberate lies while genuinely believing in them, to forget any fact that has become inconvenient, and then, when it becomes necessary again, to draw it back from oblivion for just so long as it is needed, to deny the existence of objective reality and all the while to take account of the reality which one denies - all this is indispensably necessary. Even in using the word doublethink it is necessary to exercise doublethink. For by using the word one admits that one is tampering with reality; by a fresh act of doublethink one erases this knowledge ; and so on indefinitely, with the lie always one leap ahead of the truth." http://www.liferesearchuniversal.com...html#seventeen George Orwell: "It need hardly be said that the subtlest practitioners of doublethink are those who invented doublethink and know that it is a vast system of mental cheating. In our society, those who have the best knowledge of what is happening are also those who are furthest from seeing the world as it is. In general, the greater the understanding, the greater the delusion ; the more intelligent, the less sane." Pentcho Valev |
#9
|
|||
|
|||
![]()
you and Eric Blair win;
I won't reply to your unthreads! George Orwell: "It need hardly be said that the subtlest practitioners of doublethink are those who invented doublethink and know that it is a vast system of mental cheating. In our society, those who have the best knowledge of what is happening are also those who are furthest from seeing the world as it is. In general, the greater the thus: in other words, frictionless supersolids are like the "currents in the solid mantle," and frictionless superfluids are like "aether" -- no thing. there just is no vacuum, dood, as we know by Pascal's little 1654 experiment -- PLX? what sort of verifiable experiment do *you* have, for your so-called theory? AFAIK, Newton rejected the aether as the reason for gravity because he felt it would restrict the motion of the planets. Newton was unable to comprehend the notion of frictionless supersolids and frictionless superfluids. Newton was unable comprehend the notion of bodies interaction with the aether as frictionless. Newton did not realize it is the pressure associated with the aether displaced by massive objects which is gravity. thus: well, the speed of sound is not any kind of limit, other than for waves of sound. but, what can your aetheric wanderings say about the speed of light, or any other phenomenon? (yeah, I see that you think that you have created a theory of gravity; yeeha .-) thus: in his little essay, Fitz confuzed "bending of red" (wavelength-dependent refraction) with the "doppler" redshift (if it is due to velocity-away-from-us, or to *acceleration* away from us -- cancel the programme du space ?!?) thus quoth: I came upon the Alpher, Bethe, Gamow piece in the course of pursuing the trail of the nuclear hypothesis developed by my dear friend and former collaborator, University of Chicago physical chemist and physicist Dr. Robert J. Moon. Moon was the brilliant student of that same Harkins who, for several decades, beginning about the time of World War I, took the point against the reductionist school of atomic and nuclear physics led by Rutherford and Bohr. We shall return to that healthy tradition shortly. We first briefly review the story of the overpriced letter. caption: Harkins noted that three elements—Oxygen (O), Silicon (Si), and Iron (Fe)—make up more than 80 percent of the atomic composition of meteorites. Ten elements of even number make up 97.59 perent of the meteorites. The extraordinary abundance of just a few of the 92 elements must be a clue to the stability of their nuclear structure. The data are given for 350 stone and 10 iron meteorites. Source: Harkins “The Building of Atoms and the New Periodic System,” Science, Dec. 26, 1919, p. 581 In early 1948, George Gamow, the well-known physicist and writer then at George Washington University, and R.A. Alpher launched their attack on Harkins, et al., in the form of a new theory of the origin of the chemical elements. Gamow, ever the merry prankster, asked Hans Bethe to join in endorsing the effort, which was published as a letter to The Physical Review in April 1948.1 Bethe (who as recently as 1990, told 21st Century Associate Editor Charles B. Stevens that “the only thing worse than cold fusion is Harkins”) was glad to join in, giving the paper’s authorship its alphabeticality. We shall thus, henceforth, refer to it as ABC Humbug. http://21stcenturysciencetech.com/ar...umbuggery.html http://www.amperefitz.com/einsteins.blunder.htm --http://www.canonicalscience.org/ BLOG:http://www.canonicalscience.org/publ...cetoday/ca...- Hide quoted text - thus: no; n=4 is a very, very special case, that required only "infinite descent," and he did not follow that, one of hsi very few explicit proofs, with a proviso about the general case. anyway, the "theorem" seems to have been one of his earliest insights into numbertheory; might it not? There is good circumstantial evidence that he did not; specifically, the fact that he produced a proof specific for n=4 at a later date but never mentioned the more general conjecture. thus: don't top-post, you God-am trollamatic! yep, JSH is pure Troll.- Hide quoted text - --les OEuvres! http://wlym.com --Weber's electron, Moon's nucleus! http://21stcenturysciencetech.com --Stop Cheeny, Rice, Waxman and ICC's 3rd British invasion of Sudan! http://laroucehpub.com |
#10
|
|||
|
|||
![]()
More doublethink in Einsteiniana:
John Norton, a subtle practitioner of doublethink, referring to the truth as "the consensus in physics": http://www.newscientist.com/article/...erse-tick.html "General relativity knits together space, time and gravity. Confounding all common sense, how time passes in Einstein's universe depends on what you are doing and where you are. Clocks run faster when the pull of gravity is weaker, so if you live up a skyscraper you age ever so slightly faster than you would if you lived on the ground floor, where Earth's gravitational tug is stronger. "General relativity completely changed our understanding of time," says Carlo Rovelli, a theoretical physicist at the University of the Mediterranean in Marseille, France.....It is still not clear who is right, says John Norton, a philosopher based at the University of Pittsburgh, Pennsylvania. Norton is hesitant to express it, but his instinct - and the consensus in physics - seems to be that space and time exist on their own. The trouble with this idea, though, is that it doesn't sit well with relativity, which describes space-time as a malleable fabric whose geometry can be changed by the gravity of stars, planets and matter." The lie ("mass can stretch or shrink time") published in Natu http://www.foxnews.com/scitech/2010/...ity-confirmed/ "General relativity rocked the world of physics when Einstein first published his paper on the subject in 1915. The theory built on the traditional idea of gravity based on Isaac Newton's laws, but added fundamentally new concepts like the notion that mass deforms the shape of space-time. This means that objects and even light that move through space near a large mass will travel on a curved path. Furthermore, it means that mass can stretch or shrink time as well." http://www.liferesearchuniversal.com...html#seventeen George Orwell: "Doublethink means the power of holding two contradictory beliefs in one's mind simultaneously, and accepting both of them. The Party intellectual knows in which direction his memories must be altered; he therefore knows that he is playing tricks with reality; but by the exercise of doublethink he also satisfies himself that reality is not violated. The process has to be conscious, or it would not be carried out with sufficient precision, but it also has to be unconscious, or it would bring with it a feeling of falsity and hence of guilt. Doublethink lies at the very heart of Ingsoc, since the essential act of the Party is to use conscious deception while retaining the firmness of purpose that goes with complete honesty. To tell deliberate lies while genuinely believing in them, to forget any fact that has become inconvenient, and then, when it becomes necessary again, to draw it back from oblivion for just so long as it is needed, to deny the existence of objective reality and all the while to take account of the reality which one denies - all this is indispensably necessary. Even in using the word doublethink it is necessary to exercise doublethink. For by using the word one admits that one is tampering with reality; by a fresh act of doublethink one erases this knowledge ; and so on indefinitely, with the lie always one leap ahead of the truth." http://www.liferesearchuniversal.com...html#seventeen George Orwell: "It need hardly be said that the subtlest practitioners of doublethink are those who invented doublethink and know that it is a vast system of mental cheating. In our society, those who have the best knowledge of what is happening are also those who are furthest from seeing the world as it is. In general, the greater the understanding, the greater the delusion ; the more intelligent, the less sane." Pentcho Valev |
|
Thread Tools | |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
EINSTEINIANS AND OTHER PHYSICISTS | Pentcho Valev | Astronomy Misc | 13 | January 14th 09 02:20 PM |
WHERE ARE THE EINSTEINIANS? | Pentcho Valev | Astronomy Misc | 28 | November 16th 08 02:52 AM |
DESPERATE EINSTEINIANS | Pentcho Valev | Astronomy Misc | 3 | October 4th 08 02:17 AM |
IF EINSTEINIANS WERE HONEST | Pentcho Valev | Astronomy Misc | 8 | July 10th 08 01:12 PM |
EINSTEINIANS KNOW NO LIMITS | Pentcho Valev | Astronomy Misc | 13 | May 28th 08 01:02 AM |