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Subject: Re: Addition =?UTF-8?Q?g=C3=A9n=C3=A9rale=20des=20vitesses=20relativistes?=
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Date: Thu, 22 Jun 23 13:33:48 +0000
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From: Richard Hachel <r.hachel@tiscali.fr>
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Le 22/06/2023 à 14:33, Richard Verret a écrit :
> Le mardi 20 juin 2023 à 10:24:11 UTC+2, Julien Arlandis a écrit :

> Je laisse aux matheux le soin de calculer la formule avec les vitesses réelles.

 Simple.

 Addition longitudinale des vitesses.

 Wo=(Vo+Uo)/(1+Vo.Uo/c²)

 En vitesses réelles:

 Wr=Vr.sqrt(1+Ur²/c²)+Ur.sqrt(1+Vr²/c²)

 On vérifie facilement que Wr=Wo/sqrt(1-Wo²/c²) ou, c'est pareil, que 
Wo=Wr/sqrt(1+Wr²/c²)

 R.H.