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Subject: Re: Langevin's paradox again
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Date: Wed, 10 Jul 24 20:47:05 +0000
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From: Richard Hachel <r.hachel@tiscali.fr>
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Le 10/07/2024 à 20:56, "Paul.B.Andersen" a écrit :
> Let's look at the following scenario:
> 
> - Twin A and twin B are inertial and co-located.
> - Twin B accelerates at the proper acceleration 2 c/year
>    away from A for 1 light year [ly] in A's rest frame.
> - Twin B  coasts (no engine) for 8 light years until he is 9 ly from A.
> - Twin B accelerates at 2 c/year towards A. He will reach 10 ly and
>    go back to 9 ly when he stops the engine.
> - Twin B coasts from 9 ly to 1 ly-
> - Twin B accelerates at 2 c/y until he is co-located with A.
> 
> Note:
> While B is coasting and inertial we have two inertial twins
> moving at the constant speed 0.943 c relative to each other,
> and both will measure the other twin's clock to run slow by
> the factor 0.333.
> Yet B ages 9.18 years while A ages 22.63 y.
> 
> B's accelerations make all the difference.
> 
> The greatest relativistic physicist in the universe
> (Richard Hachel) will probably not read this,
> and if he does i won't understand it.

Yes, your post appears, and I can read it.
I will answer it.
I think you're making a mistake in the concept, and I should easily 
explain why.

R.H.