Path: ...!weretis.net!feeder9.news.weretis.net!news.nk.ca!rocksolid2!i2pn2.org!.POSTED!not-for-mail
From: hitlong@yahoo.com (gharnagel)
Newsgroups: sci.physics.relativity
Subject: Re: Space-time interval (2)
Date: Tue, 13 Aug 2024 23:07:40 +0000
Organization: novaBBS
Message-ID: <318e20b52c44bd49d3fa7d10b218937e@www.novabbs.com>
References: <YqTjbAPdSf8P-veYFHQCI8eskLU@jntp> <v9dmer$3dtvr$3@dont-email.me> <3lzcd1NKCT13xkV8yvlh8oaa3Mg@jntp> <v9fdeg$3rh2a$1@dont-email.me> <jBxUcP6BzIhx3lL1WyQctHmm7jo@jntp> <v9g6ij$3vsfg$1@dont-email.me> <AVa827R_LOez7mc5Ad3CT6GyhiA@jntp> <327c4ebc77dc16239ac38f00b508451b@www.novabbs.com> <sqw3zTfcSZX8ZFqoADa2xq0VXC4@jntp>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Info: i2pn2.org;
	logging-data="2487590"; mail-complaints-to="usenet@i2pn2.org";
	posting-account="p+/k+WRPC4XqxRx3JUZcWF5fRnK/u/hzv6aL21GRPZM";
User-Agent: Rocksolid Light
X-Spam-Checker-Version: SpamAssassin 4.0.0
X-Rslight-Site: $2y$10$SKzzDDASD/jU7cmYhSN36.JzYO2Kz9cmZJbFcM/AhgMYQGMa1d53W
X-Rslight-Posting-User: 47dad9ee83da8658a9a980eb24d2d25075d9b155
Bytes: 2955
Lines: 44

On Tue, 13 Aug 2024 22:42:02 +0000, Richard Hachel wrote:
>
> Le 14/08/2024 à 00:12, hitlong@yahoo.com (gharnagel) a écrit :
> >
> > Richard Hachel wrote:
> > > ....
> > > But this perfect present time does not exist.
> > >
> > > This does not prevent that in our universe, each point considered
> is, in
> > > general at a different distance from me, and that it is impossible
> for
> > > me to synchronize with it, without desynchronizing myself from it,
> and
> > > without desynchronizing myself from the others and so on.
> > >
>>> R.H.
> >
> > Well, Richard, the GPS disproves your theory, because t' = t, as
> Wozniak
> > is over-fond of saying. (Where , in this case, t' = time in Oslo and t
> > is the time in Paris.
>
> I just explained to you the synchronization used by GPS. Abstract
> synchronization, but interesting to be able to use a universal present
> time plan (which does not exist in nature).

“There is no point in using the word 'impossible' to describe something
that has clearly happened.” – Douglas Adams

> It's a shame, you're not making any effort.
> It makes discussions very difficult.
>
> R.H.

Disagreeing with you does NOT mean that I'm not making an effort.
The fact is, I see neither reason for nor evidence of this so-called
"universal anisochrony."  It seems to have sprung from the observation
that light travels at a finite speed, but I don't think that has
anything to do with the matter.  True, there is "universal anisochrony"
for observers in SR in different frames, but it IS possible to
synchronize clocks between such frames -- but only for one instant.
But often, that's enough.  It's like:

“Any ship can be a minesweeper.  Once” -- Naval Ops Manual