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From: Python <python@invalid.org>
Newsgroups: sci.physics.relativity
Subject: Re: Langevin's paradox again
Date: Wed, 10 Jul 2024 14:49:00 +0200
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Le 10/07/2024 à 14:25, Richard "Hachel" Lengrand a écrit :
> ...
> For Paul, the logic is different, he is not here to have fun, he wants 
> to know and teach, but the problem is that he does it very badly.

He does it very well, and has a lot of fun too.

> 1. Subject B accelerates over one light year, spends 8 years in Galilean 
> motion, then reaccelerates over one light year according to a=2ly/y²
> and if
> 2. Subject B accelerates two light years, then spends 8 years in 
> Galilean motion, regaining the speed it had after one light year of travel?
> 
> For Richard Hachel, proper times will be equal

This is a direct violation of the principle of Relativity as me (and
others) have demonstrated numerous times.