Re: Understanding the theory of special relativity

Den 19.01.2025 15:57, skrev Richard Hachel:

Le 19/01/2025 à 14:42, "Paul.B.Andersen" a écrit :
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Den 18.01.2025 20:56, skrev Richard Hachel:

Le 18/01/2025 à 20:25, "Paul.B.Andersen" a écrit :
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Stella is in a rocket and is co-located with Terrence when
she starts her rocket engine and accelerates at 1 c/year
away from Terrence for 2.25 year on her clock.
Then she turns her rocket around and accelerates at 1 c/year
towards Terrence for 4.5 years.
Then she turns her rocket around and accelerates (brakes) at 1 c/year
away from Terrence for 2.25 years.
>
The important point is:
>
When Stella is back, Terrence and Stella are co-located and
stationary to each other, and both can see both clocks which are
side by side.
>
Terrence can see that his watch shows tau_T
and Stella's watch shows tau_S.
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Stella can see that her watch shows tau_S
and Terrence's clock shows tau_T.

>
Stella looks at her watch, and she sees that her watch marks 9 years.
She shows her watch to Terrence, and asks him what he sees, and he answers: "Your watch marks nine years".
On the other hand, Terrence asks Stella, and you, what do you see on my watch, and she answers your watch marks 13.5 years.
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I don't understand how you can see a difficulty there.

 We agree, there are no difficulties.

So according to Hachel:
When Stella is back, Terrence and Stella are co-located and
stationary to each other, and both can see both clocks which are
side by side.
Terrence can see that his watch shows 13.5 years.
and Stella's watch shows  nine years.
Stella can see that her watch shows 9 years.
and Terrence's clock shows 13.5 years.

 In every moment, every second.
Always, always, always, the opposite clock ticks slower.
In all repositories.
 ALWAYS.
This means that while Stella ages 18 years, always, always,
she will have considered, second after second, that Terrence's
clock had an internal chronotropy which was running slower.

Stella can see that her watch shows 9 years.
and Terrence's clock shows 13.5 years.
So Stella will have considered, second after second, that Terrence's
clock had an internal chronotropy which was running slower.
Always, always, always, Stella will see that Terrence clock
shows two different times at the same time.
:-D
--
Paul
https://paulba.no/