Re: Relativistic synchronisation method

Paul B. Andersen:

Den 31.12.2024 16:29, skrev J. J. Lodder:

Paul.B.Andersen <relativity@paulba.no> wrote:

>
Your clock and my clock and the clock on the railway station
in Paris are synchronous in the non-rotating Earth centred
frame of reference (ECI-frame).

>
You keep repeating this mistake.
TAI, hence UTC, is defined as time on the rotating geoid,
>
Jan
>

 
I keep repeating the fact that the TAI and UTC are synchronous
in the non-rotating Earth centred frame of reference (ECI-frame).

Right of course, but silly, if you rephrase it in this way.
They are the same time, by definition.
(up to a defined offset of a whole number of seconds)
So no frame comes into it.
Your original formulation is still wrong.
Perhaps you should have a look at BIPM bulletin CCTF/09-27,
or some other source on the definition of TAI.
Summary: TAI is the (best possible) realisation of the SI second,
on the rotating geoid, at mean sea level, [1]

Jan

[1] Where 'mean sea level' is nowadays understood as:
at some fixed conventional value of the Newtonian potential.
(which I would have to look up again)

For prokary: wikipedia is not sufficiently clear on this point.