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From: Richard Hachel <r.hachel@liscati.fr.invalid>
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Le 26/09/2024 à 08:25, Thomas Heger a écrit :
> 
> this wasn't my diagram, but looks actually correct.
> 
> 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.
> 
> 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.
> 
> Then the spaceship gets decelerated in order to land there.
> 
> Then the spaceship starts from there, travels back to Earth and needs to 
> decelerate here.
> 
> This requires four instances of acceleration (two positive and two 
> negative), which should cancel the effect.
> 
> 
> ...
> 
> 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.