Re: Langevin's paradox again

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Sujet : Re: Langevin's paradox again
De : r.hachel (at) *nospam* tiscali.fr (Richard Hachel)
Groupes : sci.physics.relativity
Date : 10. Jul 2024, 14:19:19
Autres entêtes
Organisation : Nemoweb
Message-ID : <xGi6LiiIi5DDDgwSb80IfxpjSgc@jntp>
References : 1 2 3 4 5 6 7 8 9 10
User-Agent : Nemo/0.999a
Le 10/07/2024 à 14:51, Python a écrit :

Between any two events whatever frame you consider the "improper times"
cannot be different. You are pathetically absurd Richard.
Dans le cas que j'ai enseigné, l'un en mouvement galiléen, l'autre en mouvement uniformément accéléré : "si les parcours sont égaux, et si les temps impropres sont égaux, alors les temps propres seront égaux".
J'ai précisé pour être exact en tout que Bella devait avoir un mouvement accéléré départ de la terre arrêté.
 Si le départ est lancé, on entre dans les problèmes d'additions de vitesses relativistes (que ce soit les réelles ou les observables), et cela ne marche plus, évidemment.
 Sinon, bien que les physiciens relativistes ne soient pas d'accord (parce qu'on leur a enseigné les choses autrement), c'est d'une grande logique mathématique et physique.
 Le pivot de la physique relativiste est un simple pythagorisme qui lie le temps observable dans un référentiel au temps propre dans un autre.  To²=Tr²+Et²  Et ça marche en tout et pour tout (si c'est bien appliqué et si l'on fait attentions aux pièges dont l'un des plus important est l'addition des vitesses relativistes qu'il faut bien faire selon les règles). R.H.   
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