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| Tags: einstein, gravitational, interpretation, misleading, redshift |
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On 13 Jul 2006 05:46:50 -0700, wrote:
Einstein interpretation of gravitational redshift is misleading --------------------------------------------------------------- Excerpts from arXiv: physics/ 9907017 v2 27 Jul 1999 ON THE INTERPRETATION OF THE REDSHIFT IN A STATIC GRAVITATIONAL FIELD L.B. OKUN and K.G. SELIVANOV ITEP, Moscow, 117218, Russia e-mail: , and V.L. TELEGDI EP Division, CERN, CH - 1211 Geneva 23 e-mail: Excerpt: "ABSTRACT The classical phenomenon of the redshift of light in a static gravitational potential, usually called the gravitational redshift, is described in the literature essentially in two ways: on the one hand the phenomenon is explained through the behaviour of clocks which run the faster the higher they are located in the potential, whereas the energy and frequency of the propagating photon do not change with height. The light thus appears to be redshifted relative to the frequency of the clock. On the other hand the phenomenon is alternatively discussed (even in some authoritative texts) in terms of an energy loss of a photon as it overcomes the gravitational attraction of the massive body. This second approach operates with notions such as the "gravitational mass" or the "potential energy" of a photon and we assert that it is misleading. We do not claim to present any original ideas or to give a comprehensive review of the subject, our goal being essentially a pedagogical one." Let's consider that photons loose energy as they overcome the gravitational attraction of the Earth: A light signal of frequency Nu1 is emitted by an atom at rest on the surface of the earth. The energy of a photon is thus E1 = hNu1 and its "mass" m = E1/c^2 = hNu1/c^2. At a height H, i.e. at a distance d = Rearth + H from the Earth's center, the frequency of the received signal is Nu2, hence the photon's energy is E2 = hNu2. Its potential energy is Ep = m * gm * H, where gm = GMearth/(Rearth*d). From E2 = E1 - Ep, one gets hNu2 = hNu1 - hNu1/c^2 * GMearth/(Rearth*d) * (d-Rearth) Nu2 = Nu1 * (1 - GMearth/c^2 * (1/Rearth - 1/d) The corresponding shift Nu2/Nu1 - 1 = -GMearth/c^2 * (1/Rearth - 1/d), which is a redshift. The same shift would be obtained using GR. To simplify, one could consider, like the authors of the paper did, that g is approximately constant when H is small. Then Ep = m * g * H = hNu1/c^2 * g * H (where g = GMearth/Rearth^2) hNu2 = hNu1 - hNu1/c^2 * g * H = hNu1 (1 - g*H/c^2) The shift then reduces to -g*H/c^2. It is easy to show that the interpretation according to which "clocks run the faster the higher they are located in the potential, whereas the energy and frequency of the propagating photon do not change with height" is wrong. It suffices to consider the case when the signal receiver is freely falling. Excerpt: "Consider now another situation, when the upper atom (absorber) moves in the laboratory frame with a velocity v = gH/c downwards. Then in the elevator frame it will have zero velocity at the moment of absorption and hence it will be able to absorb the photon resonantly in complete agreement with experiments [4, 5]. Obviously, in the elevator frame there is no room for the interpretation of the redshift in terms of a photon losing its energy as it climbs out of the gravitational well." "[4] R.V. Pound and G.A. Rebka, "Apparent weight of photons", Phys. Rev. Lett. 4, 337-341 (1960); "Variation with temperature of the energy of recoil-free gamma rays from solids", Phys. Rev. Lett. 4, 274-275 (1960); "Gravitational red-shift in nuclear resonance", Phys. Rev. Lett. 3, 439-441 (1959). [5] R. Pound, Uspekhi Fiz. Nauk 72, 673-683 (1960); "On the weight of photons", Sov. Phys. Uspekhi 3, 875-883 (1961) (English translation)." In such situation, for the freely falling absorber, the signal emitted from the ground would appear *Doppler blue shifted* by gH/c^2 if it were not *beforehand* red shifted by gH/c^2 by "the gravitational attraction of the massive body". Iow, for the absorber, the signal is not shifted at all. This is a logical proof that the signal is red shifted when it leaves the emitter. This proof falsifies Einstein's view: Excerpt: "The gravitational redshift is a classical effect of Einstein's General Relativity (GR), one predicted by him [1] well before that theory was created [2] (for the historical background, see e.g., [3]). Phenomenologically one can simply affirm that the frequency of light emitted by two identical atoms is smaller for the atom which sits deeper in the gravitational potential. [1] A. Einstein, ¨ Ueber das Relativitaetsprinzip und die aus demselben gezogenen Folgerungen, "Jahrb. d. Radioaktivitaet u. Elektronik 4, 411-462 (1907); ¨Ueber den Einfluss der Schwerkraft auf die Ausbreitung des Lichtes, "Ann. Phys. 35, 898-908 (1911). [2] A. Einstein, "Die Grundlage der allgemeinen Relativitaetstheorie", Ann. Phys. 49, 769-822 (1916) §22; The Meaning of Relativity (Princeton University Press, New York, 1921), Eq.(106). [3] A. Pais, 'Subtle is the Lord ...', The Science and the Life of Albert Einstein (Oxford University Press, Oxford, 1982), Chapter 9." Marcel Luttgens If according to GR you maintain c constant, and that a higher clock runs faster and the frequency is reduced on the way out of a gravity well, you will calculate a double redshift. What really happens is that the lowerclock will run slower, the frequency (and energy) of emission is lower and does not change, but c increases out of the well, so that the wavelength stretches to give redshift, without change in frequency. A comparative higher test clock will see single redshift, because Nu1as emitted is constant and the higher Nu2 of the upper clock detects the redshift. (With the latter true I don't also need a reduction in Nu1 or I get 2 shifts). Dropping clocks mean nothing; the intensity of the gravity in the well is the environment that governs clock rate, irrespective of acceleration. See my website. John Polasek http://www.dualspace.net |
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wrote in message ups.com... Einstein interpretation of gravitational redshift is misleading --------------------------------------------------------------- SNIP OKUN: on the one hand the phenomenon is explained through the behaviour of clocks which run the faster the higher they are located in the potential, whereas the energy and frequency of the propagating photon do not change with height. The light thus appears to be redshifted relative to the frequency of the clock. On the other hand the phenomenon is alternatively discussed (even in some authoritative texts) in terms of an energy loss of a photon as it overcomes the gravitational attraction of the massive body. This second approach operates with notions such as the "gravitational mass" or the "potential energy" of a photon and we assert that it is misleading. That is correct. SNIP LUTGENS: It is easy to show that the interpretation according to which "clocks run the faster the higher they are located in the potential, whereas the energy and frequency of the propagating photon do not change with height" is wrong. No, that is correct when using a universal reference frame; and the above article explained it rather well! (It appeared in the AJP if I'm not mistaken). LUTGENS: This proof falsifies Einstein's view: Excerpt: "The gravitational redshift is a classical effect of Einstein's General Relativity (GR), one predicted by him [1] well before that theory was created [2] (for the historical background, see e.g., [3]). Phenomenologically one can simply affirm that the frequency of light emitted by two identical atoms is smaller for the atom which sits deeper in the gravitational potential. ? As long as they are observed, Phenomena *can't* be falsified... Harald |
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wrote in message ups.com... Einstein interpretation of gravitational redshift is misleading How would you know? http://users.telenet.be/vdmoortel/di...es/LutLog.html http://users.telenet.be/vdmoortel/di...erivation.html http://users.telenet.be/vdmoortel/di...inlyWrong.html http://users.telenet.be/vdmoortel/di...idntUseSR.html Dirk Vdm |
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wrote: Einstein interpretation of gravitational redshift is misleading --------------------------------------------------------------- Excerpts from arXiv: physics/ 9907017 v2 27 Jul 1999 ON THE INTERPRETATION OF THE REDSHIFT IN A STATIC GRAVITATIONAL FIELD L.B. OKUN and K.G. SELIVANOV ITEP, Moscow, 117218, Russia e-mail: , and V.L. TELEGDI EP Division, CERN, CH - 1211 Geneva 23 e-mail: Excerpt: "ABSTRACT The classical phenomenon of the redshift of light in a static gravitational potential, usually called the gravitational redshift, is described in the literature essentially in two ways: on the one hand the phenomenon is explained through the behaviour of clocks which run the faster the higher they are located in the potential, whereas the energy and frequency of the propagating photon do not change with height. The light thus appears to be redshifted relative to the frequency of the clock. On the other hand the phenomenon is alternatively discussed (even in some authoritative texts) in terms of an energy loss of a photon as it overcomes the gravitational attraction of the massive body. This second approach operates with notions such as the "gravitational mass" or the "potential energy" of a photon and we assert that it is misleading. We do not claim to present any original ideas or to give a comprehensive review of the subject, our goal being essentially a pedagogical one." This proof falsifies Einstein's view: Excerpt: "The gravitational redshift is a classical effect of Einstein's General Relativity (GR), one predicted by him [1] well before that theory was created [2] (for the historical background, see e.g., [3]). Phenomenologically one can simply affirm that the frequency of light emitted by two identical atoms is smaller for the atom which sits deeper in the gravitational potential. I'm sorry, Marcel. I don't see any conflict. Okun says that redshift is better understood that as a time dilation effect than as a change of energy effect. The statement at bottom says the effect occurs. It does not say that this effect is due to a change of energy. PD |
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PD wrote: wrote: Einstein interpretation of gravitational redshift is misleading --------------------------------------------------------------- Excerpts from arXiv: physics/ 9907017 v2 27 Jul 1999 ON THE INTERPRETATION OF THE REDSHIFT IN A STATIC GRAVITATIONAL FIELD L.B. OKUN and K.G. SELIVANOV ITEP, Moscow, 117218, Russia e-mail: , and V.L. TELEGDI EP Division, CERN, CH - 1211 Geneva 23 e-mail: Excerpt: "ABSTRACT The classical phenomenon of the redshift of light in a static gravitational potential, usually called the gravitational redshift, is described in the literature essentially in two ways: on the one hand the phenomenon is explained through the behaviour of clocks which run the faster the higher they are located in the potential, whereas the energy and frequency of the propagating photon do not change with height. The light thus appears to be redshifted relative to the frequency of the clock. On the other hand the phenomenon is alternatively discussed (even in some authoritative texts) in terms of an energy loss of a photon as it overcomes the gravitational attraction of the massive body. This second approach operates with notions such as the "gravitational mass" or the "potential energy" of a photon and we assert that it is misleading. We do not claim to present any original ideas or to give a comprehensive review of the subject, our goal being essentially a pedagogical one." This proof falsifies Einstein's view: Excerpt: "The gravitational redshift is a classical effect of Einstein's General Relativity (GR), one predicted by him [1] well before that theory was created [2] (for the historical background, see e.g., [3]). Phenomenologically one can simply affirm that the frequency of light emitted by two identical atoms is smaller for the atom which sits deeper in the gravitational potential. I'm sorry, Marcel. I don't see any conflict. Okun says that redshift is better understood that as a time dilation effect than as a change of energy effect. The statement at bottom says the effect occurs. It does not say that this effect is due to a change of energy. PD what redshift yo misiterpret light bein a wave it cant be wave in no medium wave is pressure - underpressure variation in a medium take 1d pde equation relating directly to strings for instance, ther is pressure - underressure / tension variations in the material makin up the string yo can detect tha 1d wave yo being in a 2d or in 3d take tha 2d wave pde eqn relatin directly to the surface of water for instance, the pressures underpressures takes place again in tha water material, tha molecules are in pressure - underpressure also deeper into tha material not only at surface, but is okay becus only 2d so yo can see 2d from 3d in 3d the waves are spherical, 100% plane not pussible, to see this yu need 4d but yo only have 3d, so yo cant see light as wave is impossible its an artifact hundred procent for sure, unless yo consider propagation thro ether |
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wrote: PD wrote: wrote: Einstein interpretation of gravitational redshift is misleading --------------------------------------------------------------- Excerpts from arXiv: physics/ 9907017 v2 27 Jul 1999 ON THE INTERPRETATION OF THE REDSHIFT IN A STATIC GRAVITATIONAL FIELD L.B. OKUN and K.G. SELIVANOV ITEP, Moscow, 117218, Russia e-mail: , and V.L. TELEGDI EP Division, CERN, CH - 1211 Geneva 23 e-mail: Excerpt: "ABSTRACT The classical phenomenon of the redshift of light in a static gravitational potential, usually called the gravitational redshift, is described in the literature essentially in two ways: on the one hand the phenomenon is explained through the behaviour of clocks which run the faster the higher they are located in the potential, whereas the energy and frequency of the propagating photon do not change with height. The light thus appears to be redshifted relative to the frequency of the clock. On the other hand the phenomenon is alternatively discussed (even in some authoritative texts) in terms of an energy loss of a photon as it overcomes the gravitational attraction of the massive body. This second approach operates with notions such as the "gravitational mass" or the "potential energy" of a photon and we assert that it is misleading. We do not claim to present any original ideas or to give a comprehensive review of the subject, our goal being essentially a pedagogical one." This proof falsifies Einstein's view: Excerpt: "The gravitational redshift is a classical effect of Einstein's General Relativity (GR), one predicted by him [1] well before that theory was created [2] (for the historical background, see e.g., [3]). Phenomenologically one can simply affirm that the frequency of light emitted by two identical atoms is smaller for the atom which sits deeper in the gravitational potential. I'm sorry, Marcel. I don't see any conflict. Okun says that redshift is better understood that as a time dilation effect than as a change of energy effect. The statement at bottom says the effect occurs. It does not say that this effect is due to a change of energy. PD For a freely falling absorber, the signal emitted from the ground would appear *Doppler blue shifted* by gH/c^2 if it were not *beforehand* red shifted by gH/c^2 by "the gravitational attraction of the massive body". Because of the Doppler effect, one has to accept that the energy and frequency of the propagating photon change with height, and that clocks don't run the faster the higher they are located in the potential. The photon doesn't propagte. Its light does. http://nobelprize.org/physics/articl...ong/index.html That is why the Mossbauer experments are intepreted as changes in nuclear resonance. R. V. Pound and J. L. Snider, Effect of Gravity on Nuclear Resonance, Phys. Rev. Lett. 13, 539 (1964). [3] The more accurate measurement with Snider. Just consider that the moving masses in the atoms have to follow more curved paths near the planets surface and that robs the oscillation of energy, reducing its frequency. Then you don't get into all the causality issues created by propagation effects that are patently absurd. Sue... Marcel Luttgens |
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wrote: PD wrote: wrote: Einstein interpretation of gravitational redshift is misleading --------------------------------------------------------------- Excerpts from arXiv: physics/ 9907017 v2 27 Jul 1999 ON THE INTERPRETATION OF THE REDSHIFT IN A STATIC GRAVITATIONAL FIELD L.B. OKUN and K.G. SELIVANOV ITEP, Moscow, 117218, Russia e-mail: , and V.L. TELEGDI EP Division, CERN, CH - 1211 Geneva 23 e-mail: Excerpt: "ABSTRACT The classical phenomenon of the redshift of light in a static gravitational potential, usually called the gravitational redshift, is described in the literature essentially in two ways: on the one hand the phenomenon is explained through the behaviour of clocks which run the faster the higher they are located in the potential, whereas the energy and frequency of the propagating photon do not change with height. The light thus appears to be redshifted relative to the frequency of the clock. On the other hand the phenomenon is alternatively discussed (even in some authoritative texts) in terms of an energy loss of a photon as it overcomes the gravitational attraction of the massive body. This second approach operates with notions such as the "gravitational mass" or the "potential energy" of a photon and we assert that it is misleading. We do not claim to present any original ideas or to give a comprehensive review of the subject, our goal being essentially a pedagogical one." This proof falsifies Einstein's view: Excerpt: "The gravitational redshift is a classical effect of Einstein's General Relativity (GR), one predicted by him [1] well before that theory was created [2] (for the historical background, see e.g., [3]). Phenomenologically one can simply affirm that the frequency of light emitted by two identical atoms is smaller for the atom which sits deeper in the gravitational potential. I'm sorry, Marcel. I don't see any conflict. Okun says that redshift is better understood that as a time dilation effect than as a change of energy effect. The statement at bottom says the effect occurs. It does not say that this effect is due to a change of energy. PD For a freely falling absorber, the signal emitted from the ground would appear *Doppler blue shifted* by gH/c^2 if it were not *beforehand* red shifted by gH/c^2 by "the gravitational attraction of the massive body". Because of the Doppler effect, one has to accept that the energy and frequency of the propagating photon change with height, and that clocks don't run the faster the higher they are located in the potential. I see you learned nothing from reading Lev Okun's article. PD |
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"PD" wrote in message ups.com... wrote: PD wrote: wrote: Einstein interpretation of gravitational redshift is misleading --------------------------------------------------------------- Excerpts from arXiv: physics/ 9907017 v2 27 Jul 1999 ON THE INTERPRETATION OF THE REDSHIFT IN A STATIC GRAVITATIONAL FIELD L.B. OKUN and K.G. SELIVANOV ITEP, Moscow, 117218, Russia e-mail: , and V.L. TELEGDI EP Division, CERN, CH - 1211 Geneva 23 e-mail: Excerpt: "ABSTRACT The classical phenomenon of the redshift of light in a static gravitational potential, usually called the gravitational redshift, is described in the literature essentially in two ways: on the one hand the phenomenon is explained through the behaviour of clocks which run the faster the higher they are located in the potential, whereas the energy and frequency of the propagating photon do not change with height. The light thus appears to be redshifted relative to the frequency of the clock. On the other hand the phenomenon is alternatively discussed (even in some authoritative texts) in terms of an energy loss of a photon as it overcomes the gravitational attraction of the massive body. This second approach operates with notions such as the "gravitational mass" or the "potential energy" of a photon and we assert that it is misleading. We do not claim to present any original ideas or to give a comprehensive review of the subject, our goal being essentially a pedagogical one." This proof falsifies Einstein's view: Excerpt: "The gravitational redshift is a classical effect of Einstein's General Relativity (GR), one predicted by him [1] well before that theory was created [2] (for the historical background, see e.g., [3]). Phenomenologically one can simply affirm that the frequency of light emitted by two identical atoms is smaller for the atom which sits deeper in the gravitational potential. I'm sorry, Marcel. I don't see any conflict. Okun says that redshift is better understood that as a time dilation effect than as a change of energy effect. The statement at bottom says the effect occurs. It does not say that this effect is due to a change of energy. PD For a freely falling absorber, the signal emitted from the ground would appear *Doppler blue shifted* by gH/c^2 if it were not *beforehand* red shifted by gH/c^2 by "the gravitational attraction of the massive body". Because of the Doppler effect, one has to accept that the energy and frequency of the propagating photon change with height, and that clocks don't run the faster the higher they are located in the potential. I see you learned nothing from reading Lev Okun's article. Marcel learns nothing from anywhere. We know that since more than 5 years :-) Dirk Vdm |
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