Re: Sync two clocks

Am Freitag000023, 23.08.2024 um 07:59 schrieb Maciej Wozniak:

W dniu 23.08.2024 o 07:41, Thomas Heger pisze:
 

If time is a local phenomenon, you cannot assume, that perceived delay (or 'transit time') would be independent of movement.

 He can always assume whatever idiocy he wants.
but time is neither local nor a phenomenon.
 

Well, depends on the definition of 'phenomenon'.
The concept of time is actually based on counint repeaded events, about which we assume, they would alway occur at the same frequency.
Most common is the fequency of day and night, from which our time units were derived.
BUT: the day gets slightly longer over time and also the year gets more days (over VERY long periods of time).
We therefore cannot assume, that days in some thousand years have the same length then days today.
But, nevertheless, we derive 'time' from counting days.
other 'constants' are also not so constant as we want them to be.
But still time as a concept is based on counting something.
This what we count could be called 'phenomenon' (like e.g. sunsets).
Usually much faster processes are counted today, but still we count them and devide the result by some value, wich we regard as contant factor between 'time per se' and the counted phenomenon.
Only this is not possible outside of the realm we inhabit, because we would need to go there, before we could count sunsets on other planets.
That's why our time measure is strictly local and restricted to our home planet.
But not only this, because time depends also on hight, we are restricted to the surface of our home planet.
That's actually not bad at all, since usually we don't leave this realm.
TH