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Subject: Re: Langevin's paradox again
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Date: Fri, 12 Jul 24 14:17:00 +0000
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From: Richard Hachel <r.hachel@tiscali.fr>
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Le 12/07/2024 à 15:24, "Paul.B.Andersen" a écrit :
> Den 11.07.2024 20:29, skrev Richard Hachel:

> When Stella's clock shows 9 hours, Terrence's must show 15 hours.
> The distance must be 12 light hours, so the light that Stella  sees
> must have left Terrence 12 years earlier, when Terrence clock
> showed 3 hours.
> 
> OK.

 You're getting closer to the truth, but it's not there yet.
Breathe-exhale.
You do not yet fully understand the genius of well-understood SR.
When Stella reaches her aphelion, everyone agrees that her watch marks 9 
years.
With her powerful telescope, she observes that the earth's clock marks 3 
years.
The problem, between you and me, is that you THINK: "It takes time for the 
light to arrive" and I think "What is seen is seen live, the effects are 
real and reciprocal".
You start from the a priori that the speed of light (value c) is something 
real, because it is physically measured. It goes without saying that the a 
priori is fierce.

R.H.