Path: ...!weretis.net!feeder8.news.weretis.net!pasdenom.info!from-devjntp
Message-ID: <hXWH1I_ij_TOJ-KwMa7Rubl81zo@jntp>
JNTP-Route: nemoweb.net
JNTP-DataType: Article
Subject: Re: Understanding the theory of special relativity
References: <pLY2g2cfZDGOOQgmeYWzTah-WZA@jntp> <vmivft$28k2a$1@dont-email.me> <P34uo7fZOF85O-SfjYojnrCRX_8@jntp>
 <vmm7t2$3cgdv$1@dont-email.me> <BJ6Q9nUU0bo9Nwlif25X1jQzfd8@jntp> <vmob71$54vk$1@dont-email.me>
 <IFzu48FyPqxIuz1SjqxEczJXtvA@jntp> <vmrmts$175ja$1@dont-email.me> <QmDaLWOKhQFsAUIZ6cUSH4qtPMc@jntp>
 <vmua4i$1q2gu$2@dont-email.me>
Newsgroups: sci.physics.relativity
JNTP-HashClient: Dg3C0kjTvMNgHQbFgUZ88wWMViA
JNTP-ThreadID: 1FRaoRGN0eH3eoNV1O2MkPi-jt8
JNTP-Uri: https://www.nemoweb.net/?DataID=hXWH1I_ij_TOJ-KwMa7Rubl81zo@jntp
User-Agent: Nemo/1.0
JNTP-OriginServer: nemoweb.net
Date: Thu, 23 Jan 25 22:59:27 +0000
Organization: Nemoweb
JNTP-Browser: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Injection-Info: nemoweb.net; posting-host="e8cbf2474b472b9bb79db3dccb6a856bc1d05409"; logging-data="2025-01-23T22:59:27Z/9184567"; posting-account="4@nemoweb.net"; mail-complaints-to="julien.arlandis@gmail.com"
JNTP-ProtocolVersion: 0.21.1
JNTP-Server: PhpNemoServer/0.94.5
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
X-JNTP-JsonNewsGateway: 0.96
From: Richard Hachel <r.hachel@liscati.fr.invalid>
Bytes: 2921
Lines: 41

Le 23/01/2025 à 21:51, "Paul.B.Andersen" a écrit :
> Den 23.01.2025 09:22, skrev Richard Hachel:
>> 
>> There is a flaw in your way of understanding the ratio of observable 
>> time (terrestrial) and proper time (rockets in general).
> 
> In physics, proper time is what clocks show.
> The only way to observe time is to read it off a clock.
> So "observed time" and "proper time" are the same.
> 
> 
> https://paulba.no/pdf/Clock_rate.pdf
> 
> See: 1.1 "What is proper time?"

It's more complicated than that, breathe, blow...

Observable time is an abstract entity that, in fact, no one really 
measures.

It is based on the chronotropy of watches, that is to say the speed at 
which their internal mechanism evolves in relation to another watch.

This mechanism is always symmetrical, and always, we have 
To=Tr/sqrt(1-v²/c²) for two reciprocal watches.

Each has an internal mechanism that turns reciprocally faster than the 
other. This effect is very strange and disorienting (especially for 
Maciej), but it is a fundamental paradox.

Then, there is the apparent time Tapp.

Apparent time is the examiner's own time.

If we want to know the proper time of the examiner in relation to the 
proper time of the examinee, we must write:

Tapp=Tr.(1+cosµv/c)/sqrt(1-v²/c²)

or Tr(for me)=Tr(yours).(1+cosµv/c)/sqrt(1-v²/c²)

R.H.