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From: Python <python@invalid.org>
Newsgroups: sci.physics.relativity
Subject: Re: Langevin's paradox again
Date: Wed, 17 Jul 2024 01:41:44 +0200
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Le 17/07/2024 à 00:44, Richard Hachel a écrit :
> Le 16/07/2024 à 23:07, Python a écrit :
>> Le 16/07/2024 à 20:33, Paul.B.Andersen a écrit :
>>>
>>> Den 16.07.2024 15:25, skrev Richard Hachel:
>>> ...
>>
>>>  > Where they will no longer be is when it is necessary to calculate 
>>> Stella's own time (now Bella).
>>>  >
>>>  > The fact that Bella accelerates from rest in Stella's frame of 
>>> reference allows us to say:
>>>  > “If the paths are equal, and the observable times equal, then the 
>>> proper times will be equal”
>> ...
>>
>>> So "the travelling twin" ages less than the "stay at home twin".
>>>
>>> The ageing of the twins in the "twin paradox" is experimentally 
>>> verified to be as predicted by SR.
>>>
>>> Your theory is falsified.
>>
>> I tried, in vain, to explain to Richard how his claim : “If the paths
>> are equal, and the observable times equal, then the proper times will be
>> equal” is asinine :
>>
>> 1. Given two distincts trajectories, "equal paths" is a frame dependent
>>     property it CANNOT implies something which is NOT frame-dependant
>>     (equality of proper times)
>> 2. "observable times equal" expresses nothing more than the equality of
>>     difference of time between two events with... itself
>>
>> Out of Galilean Relativity, where proper times are always equal (and
>> then the whole claim is void), this is logically impossible.
> 
> 
> My dear Jean-Pierre,
> [snip whining]

Nothing but "I'm right, because I am right, and I am always right", no
address of the issues I pointed out. As usual...

> 
>>
>> And also I pointed out with full details how his claims implies, as
>> you wrote, that this leads to equal times for any twin scenario.
> 
> Absolutely not.
> 
> You lie.

Not at all, this is obvious to any sane person.

You contradict yourself and the principle of Relativity on your
claims about accelerated/inertial twins. I'm not the only one
who pointed that to you. You are insanely egotist and stupid,
Richard. You should not be allowed to practice medicine in France
as you currently are.