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From: "Paul.B.Andersen" <relativity@paulba.no>
Newsgroups: sci.physics.relativity
Subject: Re: Incorrect mathematical integration
Date: Wed, 24 Jul 2024 21:48:58 +0200
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Den 23.07.2024 22:31, skrev Richard Hachel:
> Le 23/07/2024 à 22:04, "Paul.B.Andersen" a écrit :
>> Den 22.07.2024 23:55, skrev Richard Hachel:
>>> Den 22.07.2024 21:37, skrev Paul.B.Andersen:
>>>>
>>>> All the clocks in the the GPS system (satellite clocks,ground clocks)
>>>> are synchronous with the UTC (Coordinated Universal Time)
>>>> to within ~1 ns.
>>>>
>>>> Your clock on your table is synchronous with the UTC+2 hours,
>>>> to within the precision you have set the clock.
>>>>
>>>> The UTC is universal in the sense that it covers the whole Earth
>>>> and the space in its vicinity.
>>>> It is coordinated in the sense that it is defined at any point
>>>> on the Earth and in the space in Earth's vicinity.
>>>> It is real even if it is defined by man. It is no illusion.
>>>>
>>>> All clocks on Earth and in the GPS-, GLONASS- and Galileo-satellites
>>>> are synchronous to the UTC or UTC+n hours.
>>>>
>>>> It is a fact that you can synchronise clocks via the GPS.
>>>> The GPS receiver determines four entities, the time, altitude,
>>>> latitude and longitude. If the spatial position is within 1 m,
>>>> the time must be the UTC to within ~2 ns.
>>>>
>>>> Yes,your GPS receiver does indeed determine the time to within few ns
>>>> of the UTC, it must do that to determine the position to few metres.
>>>> It is obviously no point in displaying the time with this precision
>>>> on the screen.
>> 
>> No comment to this, Richard?
>> 
>> Are you insisting that the GPS doesn't work because the satellite clocks
>> can't be synchronous because of the nature of space an time?
> 
> Damn Paul!
> 
> I say exactly the opposite.

See Richard explain how GPS works!

> 
> I say that if GPS works, it is PRECISELY thanks to universal anisochrony.
> 
> This is what GPS measures, and it is thanks to this that, converting 
> anisochrony into spatial metrics, they can practically give the position 
> to the nearest meter.

So since the clocks in the GPS are impossible to synchronise,
  ("between them, there will be a real time difference due simply to
  the distance.") the difference between the clocks will be converted
into spatial metrics and make it possible to give the position
to within the metre.

Well done, Richard! :-D

>>>>
>>>> You know of course that all clocks in the same time zone
>>>> are synchronous. In France and Norway clocks are currently
>>>> showing GMT + 2 hour, so my clock and your clock are actually
>>>> synchronous.
>>>>
>>>> Please explain why our clocks are NOT synchronous.
>>>> (To within few seconds)
>> 
>>>
>>> But I keep explaining it to you.
>>>
>>> This is a property of space that can be called universal anisochrony.
>>>
>>> This does not translate into the idea that the “plan of present time” so dear to physicists does not exist, it is a thought that seems logical to them, but it is an abstract thought.
>>>

>> 
>> I interpret this to mean that watches in Norway and France are
>> not synchronous even if they both show GMT+2h

> 
> I notice that in your examples, you talk about airports or planes. It's 
> absurd. It is clear that the laws of relativity do not apply at such low 
> speeds, where Vr=Vo and Tr=To.
> Relativity only exists if we go very far, or if we go very quickly, and 
> not in the common world.

We are talking about synchronisation of clocks. Not relativity.

You claim that clocks in Norway and France are not synchronous
even if both show the time UTC + 2h because of the universal
anisochrony.

The question is about your anisochrony, so please read this and
answer the questions.

I leave Oslo Airport (Gardemoen Airport) when the watch on the airport
shows 12.00.00
I arrive at Paris Airport (Charles De Gaulle Airport) when the watch
on the airport shows 13.30.32.

The difference is T = 1h 30m 32s
Is this a real time, or is it impossible to know the real time
because of the universal anisochrony?

The distance in the ground frame between the airports is L = 1358.03 km.
Is the real speed of the plane in the ground frame v = L/T = 900 km/h,
or is it impossible to know the real speed of the plane because
of the universal anisochrony?


The question is simple:
Is it possible to calculate the real duration of the journey
by comparing the reading of the clock in Oslo at the departure
and the reading of the clock in Paris at arrival?

Yes or no, please.

I can understand why you find it very hard to answer
questions when they are taken from practical scenarios
in the real world, and not from your fantasy world.

-- 
Paul

https://paulba.no/