Re: Oh my God!

Am Donnerstag000026, 26.09.2024 um 16:22 schrieb Richard Hachel:

Le 26/09/2024 à 08:25, Thomas Heger a écrit :

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this wasn't my diagram, but looks actually correct.
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My own explanation for the so called twin paradox was a bit similar, but based on the idea, that acceleration causes the relativistic effects and not velocity.
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Such a travel would cause a situation, where a spaceship gets accelerated from - say- Earth, to reach a certain travel velocity to a distant star and a planet there.
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Then the spaceship gets decelerated in order to land there.
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Then the spaceship starts from there, travels back to Earth and needs to decelerate here.
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This requires four instances of acceleration (two positive and two negative), which should cancel the effect.
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...
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TH

 Les accélérations n'ont rien à voir dans l'histoire.
 Leur seul intérêt est de faire changer de référentiel, c'est à dire, de CHRONOTROPIE et de métrique.
 Rien à voir avec ce qui se passe après.
 Car tout se passe APRES. Et dans les longs segments de vitesses relatives uniformes.
Il ne faut pas se soucier des accélérations, elle ne sont que peu de choses sur peu de durées si l'on se concentre sur les temps totaux enregistrés.
 Le time-gap, je le répète, c'est de la poussière sous le tapis. Ca n'existe ni pour Terrence, ni pour Stella si l'on comprend bien ce que l'on est en train de définir.
 C'est de l'idéologie minkowskienne, ça.
R.H.

"Accelerations have nothing to do with history.
Their only interest is to change the frame of reference, that is to say, CHRONOTROPY and metric.
Nothing to do with what happens after.
Because everything happens AFTER. And in the long segments of uniform relative speeds.
We should not worry about accelerations, they are only a small thing over a small duration if we focus on the total times recorded.
The time gap, I repeat, is dust under the carpet. It does not exist for Terrence, nor for Stella if we understand what we are defining.
That is Minkowskian ideology."
Well, that's wrong.
Apparently acceleration has an impact upon the flow of time, while velocity hasn't.
One reason: several observations point in this direction (e.g. Havard Tower experiment, Pioneer anomaly).
second: velocity is not defined in the dark, forcefree space of SRT.
Therefore we need to put more emphasis on acceleration and forget v for a moment.
TH