Re: Sync two clocks

On 2024-08-23 11:45:50 +0000, Richard Hachel said:

Le 23/08/2024 à 13:23, "Paul.B.Andersen" a écrit :

 https://paulba.no/paper/Electrodynamics.pdf
Quote from § 1. Definition of Simultaneity:
-------------------------------------------
"If at the point A of space there is a clock, an observer at
A can determine the time values of events in the immediate
proximity of A by finding the positions of the hands which
are simultaneous with these events.
If there is at the point B of space another clock in all
respects resembling the one at A, it is possible for an observer
at B to determine the time values of events in the immediate
neighbourhood of B.
But it is not possible without further assumption to compare,
in respect of time, an event at A with an event at B.
We have so far defined only an “A time” and a “B time.”
We have not defined a common “time” for A and B, for
the latter cannot be defined at all unless we establish
by definition that the “time” required by light to travel
from A to B equals the “time” it requires to travel from B to A.
"
 If you can read, you will see that Einstein did say what I said.

 Here is finally a solid basis.
And that is very well said.
The small drawback that remains is that Einstein proposes a definition,
but without explaining which observer will be able to consider the proposition as true.

What is not explained in the quoted text is explained later in the
same article.
--
Mikko