Re: [SR] The traveler of Tau Ceti

Le 28/03/2024 à 12:06, M.D. Richard "Hachel" Lengrand a écrit :

Le 27/03/2024 à 23:03, Python a écrit :

Le 27/03/2024 à 18:07, Volney a écrit :

On 3/27/2024 8:25 AM, Paul B. Andersen wrote:

Den 27.03.2024 07:23, skrev Richard Hachel:

Le 26/03/2024 à 21:45, "Paul B. Andersen" a écrit :

Den 22.03.2024 09:49, skrev Richard Hachel:

Le 21/03/2024 à 21:05, "Paul B. Andersen" a écrit :

>

You are claiming that the protons are going around the ≈ 27 km ring
≈ 78 million times per second.
The real value is ≈ 11.25 thousand times per second.
>
Don't you think the physicists at CERN had noticed the difference? :-D
>
But maybe you were joking.
In that case you had me!
>

It appears "Dr." Hachel stumbled across the physics concept of "rapidity". Rapidity is related to speed but isn't a speed. It is related to speed by r = arctanh(v/c) where v is the velocity. The rapidity of light is infinity. AFAIK, rapidity is used sometimes to simplify the math. For example, rapidities of two objects in one dimensional motion can be just added but velocities need the Einstein velocity addition formula.

>
It is not even that, it is worse, far worse.

 Je ne vois pas l'intérêt de ton intervention.
J'attends toujours tes excuses pour ton comportement stupide sur le description du voyageur de Langevin en vitesses apparentes, et pourquoi la formule Vapp=Vo/(1+cosµ.Vo/c) ne fonctionne que pour l'aller et pas pour le retour.

I won't apologize for having stated a basic geometric fact. The
formula applied for both *but* not for the *whole* trajectory for
the return trip :
https://gitlab.com/python_431/cranks-and-physics/-/blob/main/Hachel/divagation_lengrand.pdf
I won't apologize either for having pointing out, as many others, that
your claim for the accelerating traveler in your Tau Ceti scenario
is directly violating the principle of relativity.
It is not my fault if you, M.D Lengrand, are stubborn, dishonest and
stupid.