Re: [SR] Dismaying intellectual desert?

Liste des GroupesRevenir à physics 
Sujet : Re: [SR] Dismaying intellectual desert?
De : r.hachel (at) *nospam* tiscali.fr (Richard Hachel)
Groupes : sci.physics.relativity
Date : 02. Apr 2024, 14:48:09
Autres entêtes
Organisation : Nemoweb
Message-ID : <PRfqJi3mjsXTEUpZ6IbdyuusdIk@jntp>
References : 1 2 3 4 5 6 7 8
User-Agent : Nemo/0.999a
Le 02/04/2024 à 14:48, "Paul B. Andersen" a écrit :
The "basic effect" is simple:
Paul, you're talking nonsense.
The apparent speed of an object crossing my line of sight,
is like Vapp=Vo/(1+cosµ.Vo/c) where µ is the angle that the direction of the object makes, and the direction of my aim.
If this object moves towards me, then cosµ=-1.
As Jean-Pierre Python rightly says, who for once is not mistaken, we obtain v_app=v/(1-v/c)
In Hachel writing: Vapp=Vo/(1-Vo/c)
We want to know at what speed the object must move so that its apparent displacement is equal to or greater than c.
Vo=Vapp/(1+Vapp/c)
If Vapp=c or more, Vo>c/2
R.H.

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