Re: Understanding the theory of special relativity

Le 24/01/2025 à 12:17, "Paul.B.Andersen" a écrit :

Are you inflating your rubber duck?
 

 Observable time is an abstract entity that, in fact, no one really measures.

 So "observable time" is not observable,
and isn't the time observed on a clock.
 Stands to reason, doesn't it? :-D
 

 It is based on the chronotropy of watches, that is to say the speed at which their internal mechanism evolves in relation to another watch.

 So "the internal mechanism" make the abstract entity "observable time",
that, in fact, no one really can observe, show something in relation
to another watch.
 How can "the internal mechanism" know which watch is
the "another watch"?
How can "the internal mechanism" know the reading of

There are three notions of time in Dr. Hachel's work.
Proper time (Tr, tau), which is the simplest notion to understand, and which I don't even have to explain.
Observable time, which is an abstract notion, but which we all use for convenience, and which rather defines the chronotropy of each frame of reference in relation to another.
Apparent time, which, in fact, is the proper time during which an observer observes an event that happens elsewhere.
These are very simple notions, once we understand the principle.
Let's take an event that occurs in Stella's rocket, and which lasts one hour. We will note that the proper time (tau), for Stella, is 1 hour. We will also call it real time (Tr).
Tr = tau = 1 h
Now, this real time, this proper time, is also the observable time in Stella's frame of reference. That is to say that for all the stationary observers present in its frame of reference will measure To=1h.
But it is no longer the time measured in another frame of reference, since we said that the observable time, that is to say the chronotropy was relative. In another frame of reference animated by a uniform rectilinear movement of speed Vo=0.8c, the proper time of the event in R becomes an observable time in R' which is 1h20. This is called the dilation of the chronotropy (Lorentz factor).
But that is not all, it is ALSO necessary as Dr. Hachel says (who is obviously completely crazy) to take into account the position of the observer, who will note an apparent time measured with his own proper time.
Let's admit that the rocket is hurtling towards the earth, and that we want to know how long the event lasts for the terrestrial observer.
Tapp=Tr(1+cosµ.v/c)/sqrt(1-v²/c²)=20mn.
That is to say that for Stella, it lasted 1 hour of proper time, but for Terrence, it lasted 20' of proper time.
I have been explaining it for years, and unfortunately it seems that no one makes the effort to understand a reasoning that is both true, experimentally proven, and conceptually very beautiful. So we mock, and we spit.
It is obviously stupid.
Let's add a poignant reflection: if already, this, which is only simple Galilean relativistic logic is difficult for you to understand, how do I explain relativity in uniformly accelerated media and in rotating relativistic media?
I just have to watch others explain this with pure mathematical theoretical madness, and start crying at the abstract and ridiculous notions they teach.
R.H.