Re: [SR] Dismaying intellectual desert?

Le 03/04/2024 à 23:12, Maciej Wozniak a écrit :

W dniu 03.04.2024 o 22:26, Paul B. Andersen pisze:
 

Yes, we know that no speed of massive objects or particles
can exceed c. So what?

The notion of simultaneity being defined by the coincident existence of all events occurring
at the same time ; or again, being characterized by the set of all physical phenomena
taking place at the same time; we should be able, at least considering all the components
fixed being in a given inertial system, to speak of absolute simultaneity, of synchronization
cosmic, or common calendar -- these terms then being likely to acquire real significance
physical tion -- if we could, without it varying, transpose the universal simultaneity specific to a
particular observer to all the other inertial observers present in this same frame of reference.
    It would be enough to find any signal, or any action, by which a body A could
interact instantly with a body B, that is to say by means of information propagating infinitely
quickly, so that this notion of absolute simultaneity can be experimentally proven.
    We could then say that the action induced by body A was instantly transmitted to body B, or
that the action produced by body A was carried out at the same time as its detection by body B, and that it
exists, de facto, between A and B, a sort of reciprocal and absolute simultaneity.
     We could also imagine a round trip signal carried out over the distance separating A from B, and carried out at
means of infinitely rapid information, such that the departure and return times of
information is simultaneous. It would easily come to mind that if the two watches A and B are
well tuned, the notion of general coexistence of the things of the universe in perfect simultaneity would be
thus demonstrated.
     However, this proof does not exist.
     We know that a body can act on another body at a distance, for example in the form of a wave.
electromagnetic, in the form of a mechanical shock transmitted along a rigid rod, or under the
form of a gravitational interaction, but we have never found a signal that is infinitely fast,
or remote action that is instantaneous. It rather seems, in fact, that there exists, in nature, a kind
impassable speed limit, which we will find in any Galilean reference frame considered, and which will
extend to all particles and all properties of physics.

 So, even your idiot guru had to finally abandon
this nonsense in his GR shit.

The three distinct notions of classical observable speed (Vo), apparent speed (Vapp) and real speeds (Vr) should not be confused.
No observable speed can exceed c, while the other two types offer no limits.
R.H.