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Groups > sci.physics.relativity > #455531
| From | Dino Bruniera <dino.bruniera@gmail.com> |
|---|---|
| Newsgroups | sci.physics.relativity |
| Subject | Demonstration that on Earth the speed of light cannot be isotropic |
| Date | 2018-04-11 17:20 +0200 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <pal93n$1c42$1@gioia.aioe.org> (permalink) |
Demonstration that on Earth the speed of light cannot be isotropic. The frequency of the photons of the CMBR measured on Earth, is not isotropic for some very slight anisotropies (around one in 100,000), but most of all for a particular anisotropy, called "dipole anisotropy", of much greater amplitude (around one in 1,000), which depends on the direction of the CMBR’s provenance and that is due to the motion of the Earth (about 370 km/s) with respect to a particular location in the space, in which this anisotropy would not be detected. Hence in that location the CMBR’s frequency would be isotropic (without considering the aforementioned slight anisotropies) or, more precisely, would not be affected by the dipole anisotropy. But its speed would also result isotropic, since the MM experiment proved that the speed of photons (including those of the CMBR) results isotropic in any location in which it is measured. Therefore, in this location both the speed and the frequency of the CMBR would be isotropic, as is realistically reasonable. Because it is not acceptable to assume that the frequency of the CMBR isn’t isotropic, and that, at the same time, its speed is isotropic (see the next section for a demonstration of this statement). So if on Earth it appears that the frequency of CMBR isn’t isotropic (without considering the aforementioned slight anisotropies) and, on the other hand, that its speed is isotropic, one of the two measurements is not correct. The location in which both the speed and frequency of the CMBR (without considering the aforementioned slight anisotropies) would be isotropic, can be only that where the frequency is measured, i.e., that where the Earth is transiting in the moment of measurement. But if in that location the speed of the CMBR photons is isotropic, the speed of all the other photons, including light photons, must therefore be isotropic. And if the speed of the photons is isotropic with respect to the location they are traversing, it cannot be isotropic with respect to the Earth, as the Earth is in motion with respect to that location. In conclusion, if on Earth the speed of the photons appears isotropic, as in the experiment of MM, it only means that the tools available on Earth are not able to measure it properly, and not that it really is isotropic. Demonstration through thought experiments Imagine the expanding Universe as a big rubber ball that is being continuously inflated, with many points marked on its surface (representing locations in space). Now imagine CMBR photons as a set of cars that move on its surface at the constant speed of 1 m/s. Imagine then the Earth as a pickup truck that moves on the surface of the sphere, but at a lower speed than 1 m/s, and let us suppose that it is able to measure its speed against the cars. It would be revealed that the cars approach the truck at different speeds depending on the direction, and with suitable calculations it would be possible to determine its speed with respect to the point it is traversing. For example, if the speed of only two of the cars coming from opposite directions was measured by the truck, and these were respectively 0.9 and 1.1 m/s, the difference would be 0.2 m/s and its speed with respect to this point would be half, i.e., 0.1 m/s. But if the truck measured a speed of 1 m/s for both of the cars (which would represent the MM experiment), it would mean that it does not have adequate tools to detect the exact speed and not that the cars are really moving towards it at a speed of 1 m/s, as this would be impossible. Now, let us assume that in a certain point marked on the sphere, two lines of cars are passing through coming from opposite directions and with the cars in each line spaced 0.1 metre apart. In one second an observer positioned at that point, would count 10 cars coming from one direction and 10 from the other, and would measure a speed of 1 m/s for each of them. Therefore both the frequency of the cars and their speed, would be isotropic. Now, assuming that the truck always moves at a speed of 0.1 m/s in one of the two directions, in one second it would count 11 cars coming from the direction in which it is moving, and 9 cars coming from the opposite direction. So it would detect a difference of two cars between the two directions of origin (the difference represents the dipole anisotropy of CMBR). And if it accurately measured the speed of the cars with respect to itself, it would find that those coming from the forward direction would have a speed of 1.1 m/s, while those coming from behind would have a speed of 0.9 m/s. Therefore, both the frequency and the speed of the cars, would be anisotropic. But if it measured their speed isotropic (1 m/s) and their frequency anisotropic (11 and 9), it would mean that one of the two measurements was incorrect, namely that of the speed as shown in the previous experiment. Dino Bruniera
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Demonstration that on Earth the speed of light cannot be isotropic Dino Bruniera <dino.bruniera@gmail.com> - 2018-04-11 17:20 +0200
Re: Demonstration that on Earth the speed of light cannot be isotropic Tom Roberts <tjroberts137@sbcglobal.net> - 2018-04-11 15:09 -0500
Re: Demonstration that on Earth the speed of light cannot be isotropic Dino Bruniera <dino.bruniera@gmail.com> - 2018-04-12 12:03 +0200
Re: Demonstration that on Earth the speed of light cannot be isotropic Tom Roberts <tjroberts137@sbcglobal.net> - 2018-04-12 13:18 -0500
Re: Demonstration that on Earth the speed of light cannot be isotropic mlwozniak@wp.pl - 2018-04-12 12:16 -0700
Re: Demonstration that on Earth the speed of light cannot be isotropic Dino Bruniera <dino.bruniera@gmail.com> - 2018-04-13 17:08 +0200
Re: Demonstration that on Earth the speed of light cannot be isotropic Tom Roberts <tjroberts137@sbcglobal.net> - 2018-04-13 18:08 -0500
Re: Demonstration that on Earth the speed of light cannot be isotropic Dino Bruniera <dino.bruniera@gmail.com> - 2018-04-14 15:29 +0200
Re: Demonstration that on Earth the speed of light cannot be isotropic Dino Bruniera <dino.bruniera@gmail.com> - 2018-04-14 18:54 +0200
Re: Demonstration that on Earth the speed of light cannot be isotropic Dino Bruniera <dino.bruniera@gmail.com> - 2018-04-17 01:13 +0200
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