Blog Ekkehard Friebe

Nachstehend bringe ich einen weiteren Beitrag von Rothwell Bronrowan (Germany). 
Quelle: http://www.wbabin.net/weuro/bronrowan6.pdf

Zitat:

Demjanov’s Error
Rothwell Bronrowan   physbron@t-online.de

Victor Demjanov is a Soviet scientist at the Ushakov State Marine Academy in Novorossiysk, Russia. In the current year, 2010, he has published a number of papers on interferometry [1], these relating in particular to the Michelson-Morley experiment.
The papers refer back to experimental discoveries allegedly made by him in the period 1968 – 1975. General publication at an earlier date, he writes, was not possible.
Demjanov claims to have found the fault that led to the „negative“ (or zero) results obtained by Michelson (1881), Michelson-Morley (1887) and Miller (1926), to have corrected this fault and to have thereupon
          1) verified the existence of the ether; and
          2) obtained a new – far higher – value for the velocity of the earth in space.
I came across Demjanov and his work in early August 2010. At first I was very taken with his claims, but on reading them more closely the first errors and contradictions soon became apparent.
This paper addresses, in particular, one of these errors.

But first let’s take a bit of steam out of the above claims. When Demjanov speaks of verifying the existence of the ether, all he really means is that he has obtained a level of shift of the magnitude sought by Michelson in the latter’s attempts to verify the ether. In other words, we can rephrase the first of the above claims as stating that Demjanov has:

          1) derived a level of shift in the bands of light that Michelson would have accepted as being a significant result for his experiments. [2]

As for the second claim, this is a result based not on the orbital velocity of the earth around the sun, as was Michelson’s result, but on the velocity of the earth around the galaxy! In other words, the implied comparison cannot be upheld.

***

So what did Demjanov actually discover? Here is a numbered list of some of the claims made by him (since his English is often difficult to follow, I „quote“ in my own words):

1) In general:
1a) he claims to have proved, in the years 1968-1975, that interference rings really do exist
1b) by reproducing the 1881, 1887 and 1926 experiments and results,
1c) this work being „unexpectedly suspended“ in 1974.

2) In the process he soon discovered:
2a) that no shift in the interference fringes is recorded in a vacuum,
2b) and that it is therefore only natural that experiments conducted in a vacuum lead to „zero“ fringe shifts.

3) He investigates
3a) air, as the „light carrier“ for the 1881, 1887 and 1926 experiments,
3b) adding that failure to take account of the dielectric permittivity of air (?) resulted in a hundred-fold underreporting of the velocity of the „ether wind“, and goes on to claim that
3c) as ? approaches 2, the interferometer loses its sensitivity to the „ether wind“,
3d) as is also the case when ? approaches 1 [from above [3]].

4) He claims:
a) that shift only occurs when light carriers have a refractive index [4] (n) that is greater than one (n>1),
4b) that the Michelson interferometer is only sensitive to ether wind for a refractive index of n>1,
4c) and that he has examined refractive indices from 1 < n < 1.8.

5) He states:
5a) that the amplitude of the shifts must exceed the noise level many times over, and
5b) that his experiments show that a signal/noise ratio of more than 10 can be reliably achieved.

6) He calculates:
6a) the velocity of the earth as being several hundred km/s, namely
6b) 140 – 480 km/s,
6c) mentioning that, if Michelson had recognized this in 1881 (e.g. ~300 km/s as compared to ~30 km/s), he would have obtained an estimate of not 0.04 bandwidths, but of 4.0 bandwidths, i.e. a fringe shift of 4 bandwidths.

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[1] What and how does a Michelson interferometer measure?, aeXiv: 1003.2899v2 [physics.gen.ph], and, Michelson-type interferometer operating at effects of first order with respect to ?/c, viXra:1007.0038
[2] Shortly we will make another, very important point relating to Demjanov and the ether.
[3] [my addition]
[4] = index of refraction: the ratio of the velocity of light, or other radiation, in the first of two media, to its velocity in the second as it passes from one into the other, the first medium usually being taken to be a vacuum. Notice that n = square root of (?r) = square root of (?/?0), where ? = dielectric permittivity [3b], ?r = relative permittivity and ?0 = electric permittivity of free space.

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Beste Grüße Ekkehard Friebe