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From: clzb93ynxj@att.net (LaurenceClarkCrossen)
Newsgroups: sci.physics.relativity
Subject: Re: [ANN] SR/InertialFrames v2.2.1
Date: Thu, 29 May 2025 23:47:53 +0000
Organization: novaBBS
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On Mon, 26 May 2025 18:11:47 +0000, Paul.B.Andersen wrote:

> Den 26.05.2025 05:47, skrev Julio Di Egidio:
>>
>> No, seriously, the fact with the Twins is (and this can
>> be shown with diagrams!) that, assuming you are the one
>> who travels of us two: you (the individual I am talking
>> to here and now) will meet an older "me" when you get
>> back (not the me you are talking to here and now); while
>> I will meet a younger "you" when, at a later (proper)
>> time than that, "you" get back to me!
>
>
> Quite. Seriously the fact is:
> At the event "we are co-located and you start your engine",
> we are equally old.
> At the event "reunion",
> you will meet an older "me" (meaning "you are younger than me"),
> and I will meet a younger "you" (meaning " I will be older than you").
>
>>
>> Namely, there are *two* (in proper time!) separate
>> rendezvous "events" (the standard terminology is rather
>> a hindrance), and here is the Twin Paradox: what if I
>> decide to kill myself in between the (proper) time you
>> get back (the first rendezvous), where you get to see
>> "me", and the (later, proper) time when I am supposed
>> to get to my rendezvous with "you"?
>
> What a weird idea! :-D
>
> This is the reality:
>
> https://paulba.no/paper/Hafele.pdf
>
> Fact:
> The east going clock left the ground clock when they were
> synchronous. When it had travelled once around the Earth and
> was back at the ground clock, the travelling clock was 59 ns
> younger than the ground clock, and the ground clock was 59 ns
> older than the travelling clock.
>
> Do you claim that the event "travelling clock is back at
> the ground clock", and the event "ground clock is again
> co-located with the travelling clock", are two separate events,
> where at the first event the travelling clock showed t-59 ns,
> when it "saw" that the ground clock showed t,
> and at the second event  the ground clock showed t,
> when it "saw" that the travelling clock showed t-59 ns?
>
> Or what do you claim?
>
> What did the clocks show at the reunion?
>
>
>
> https://paulba.no/pdf/H&K_like.pdf
> https://paulba.no/pdf/TwinsByMetric.pdf
> https://paulba.no/pdf/TwinsByDoppler.pdf
> https://paulba.no/twins.html
Paul, that one clock runs a different rate under certain conditions does
not warrant the inference that time itself runs at a different rate
because that would require that all rates of change run at a different
rate. A clock is only one rate. For an organism to age at a different
rate requires that many rates change.