Re: Relativistic aberration

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Sujet : Re: Relativistic aberration
De : r.hachel (at) *nospam* wanadou.fr (Richard Hachel)
Groupes : sci.physics.relativity
Date : 03. Aug 2024, 21:04:41
Autres entêtes
Organisation : Nemoweb
Message-ID : <l39SFt2nxGvDDWJ_rSxxtLzKJog@jntp>
References : 1 2 3 4 5 6 7 8 9 10
User-Agent : Nemo/0.999a
Le 03/08/2024 à 20:35, "Paul.B.Andersen" a écrit :
Stupid astronomers who doesn't understand that the light they
see in the telescope left the star NOW!
 You live in a very weird world, Richard! :-D
 Paul
Absolutely. Astronomers are stupid. If we ask them how far away is this supernova that has just collapsed on itself, they will say 15,000 light years.
They will set D = 15,000 ly.
In this they are intelligent.
In this they are as intelligent as Paul B. Andersen, who is as intelligent as Dr. Hachel.
Let's go further.
We will then ask them how far away is the rocket described in the example we have taken.
They are intelligent, as intelligent as Paul B. Andersen, and as Dr. Hachel (a giant of the relativistic theory among you)
and they will say D' = 41,000 ly.
If we give a speed to light, this means that for one observer it has moved for 15,000 years, and for the other, it has moved for 41,000 years.
This is obviously absurd if we do not understand that it is not only a relative measurement, but above all an abstract one (and which does not exist in itself, neither for the star, nor for the terrestrial observer, nor for the rocket).
For both observers, the vision of the explosion is instantaneous.
t'=t=0.
I will never understand how physicists and astrophysicists have never been able to understand this in the 120 years since Poincaré laid the first foundations.
They (physicists) take an abstract measurement (the speed of light) for a real measurement independent of the position of the observer in HIS own space-time.
Paul sitting on this bench and Carolina sitting on this other bench ARE in the same three-dimensional geometry, but they are not in the same inertial space-time frame (this word does not mean ANYTHING in well-understood physics, it is ab-surd).
They certainly have the same notion of space, but they will never have the same notion of the simultaneity of things.
Notion of anisochrony.
It is very tiring to say the same thing over and over again, while readers do not make, but not at all, the effort to understand or worse, mock what they do not understand.
R.H.
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