Re: The problem of relativistic synchronisation

Le 02/09/2024 à 08:25, Thomas Heger a écrit :

Am Sonntag000001, 01.09.2024 um 12:18 schrieb Richard Hachel:

This 'now' is called 'hyperplane of the present' in relativity lingo.

 This is a Hachel's term.
 Except that for Hachel, it is not global, it is not universal to a given stationary frame, and for the entirety of the frame.
Romeo and Juliet, each on their own bench, are in the same stationary frame (3D), but they each have their own frame of reference (4D), that is to say their own hyperplane of present time, of universal simultaneity.
Two simultaneous events in Romeo's universe are no longer simultaneous in Juliet's universe.
It is this obviousness and this conceptual beauty that physicists refuse to admit, while they easily admit the effects of the second degree (but not the first) of the theory of relativity.
When Dr. Richard Hachel speaks to them of dyschronotropy by change of inertial frame of reference (the three terms are semantic exact), they understand him, and he acclaims its mathematical clarity and physical relevance.
Hachel then speaks to them of universal anisochrony. They drown very quickly as if they had fallen into the icy waters of the North Atlantic, off the coast of Terre-Neuve.
R.H.