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Re: Demonstration that on Earth the speed of light cannot be isotropic

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Il 14/04/2018 01:08, Tom Roberts ha scritto:
> On 4/13/18 10:08 AM, Dino Bruniera wrote:
>> In my opinion the MMX experiment showed that the velocity of light is 
>> isotropic, just because their fringes didn't move as the orientation 
>> of the interferometer changed.
> 
> It cannot possibly do that, because there is an infinite class of 
> theories in which the speed of light is NOT isotropic, but the MMX 
> fringes are predicted to remain fixed as the interferometer is rotated.
> 
>      Theories in this class are experimentally indistinguishable
>      from SR. They are distinguished by the ROUND-TRIP speed of
>      light being isotropic in every inertial frame, but the
>      one-way speed of light is isotropic only in their aether
>      frame. This class is not well known, except among people
>      like myself who have seriously studied the foundations and
>      experimental basis of SR.

I know at least one of these theories.
In practice it is based in the Lorentz ether theory, before 1916.
It states that what is measured is not the speed of light one-way, but 
the speed of light two-way, or ROUND-TRIP.
And the one-way speed of light is isotropic only in their aether frame.
As you wrote.
Which in my demonstration corresponds to the location where the CMBR’s 
frequency is isotropic (without considering the slight anisotropies).
In fact, in my statement I didn't specify whether the isotropy of the 
speed of light, is one-way or two-way.
But even in the case of a round-trip, there is isotropy only in case 
their fringes didn't move as the orientation of the interferometer changed.
In fact, at least in my opinion (that I think I can demonstrate, but 
with difficulty in English), in the event that their fringes move as the 
orientation of the interferometer changed, both the special relativity 
theory and the Lorentz ether theory, would be falsified.
However, the point is that in the MMX experiment, the fringes of light 
didn't move as the orientation of the interferometer changed, both on 
the surface of the Earth, and in the location where the frequency of the 
CMBR is isotropic, but only if the frequency of the CMBR is isotropic 
(without considering the slight anisotropies), the speed of light 
one-way is isotropic.

But I understand that my demonstration is a bit 'difficult to 
understand, so I will try to find a different way of exposure, to make 
it easier.

So I thank you for the observation.


> 
>> As is affirmed by valid scientific sources.
> 
> They are NOT "valid" -- see above.
> 
>> Here is what one of them, says:
>> "Michelson and Morley were able to measure the speed of light by 
>> looking for interference fringes between the light which had passed 
>> through the two perpendicular arms of their apparatus."
>> (from
>> http://scienceworld.wolfram.com/physics/Michelson-MorleyExperiment.html)
> 
> That is CLEARLY wrong, as M&M did not MEASURE the speed of light at all. 

It's true.

> They measured fringe positions. AT MOST that can be interpreted as the 
> round-trip speed of light being isotropic (and even that requires 
> assumptions not in evidence). 

O.K.

> The above theories are counterexamples to 
> the notion that the speed of light itself is isotropic.

I didn't understand this last sentence.
What do you mean by "counterexamples"?

I apologize for my poor English, which I think is hard to understand.



Dino Bruniera

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Thread

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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