Re: I dare to relativists to explain local time: t-vx/c²

On 2024-10-07 08:45:14 +0000, Richard Hachel said:

Le 07/10/2024 à 10:21, Mikko a écrit :

What evdence there is to show that the semantics of times. positions,
durations and lengths is not well understood by almost everybody?
 Mikko

 A great quantum physicist was once asked the question: "Is it true that there are only three physicists in the world who understand quantum physics?"
He replied: "And who is the third?"
The same goes for special relativity.

No, it doesn't. Special Relativity is fairly simple and easy to understand.
But it is not self-evident. It is not understood by those who have not
learned it. Some people simpy find it too uninteresting.

But worse.
If I were asked if it is true that only three people in the world understand SR, I would be obliged to ask and who are the other two?
 There are necessarily things that physicists or fans do not understand, I see it very well when I post messages, and everyone is flying at fifteen miles.

SR is rotten with errors and misunderstandings,

SR is often misunderstood by those who have not properly sutied it but
there are no misunderstanding in SR itself.

and many repeat things without understanding them, or even understanding them backwards.
 If I ask a question like:
"What makes the notion of simultaneity relative? Is it the position? Is it the speed?"

Nothing makes simultaneity relative. It simpy is relative.

100% of the 569,874 people questioned will throw themselves on the ground holding their sides, because the question will make them laugh so much.
 They will all answer: speed!
 That's wrong. It's the position.
 Romeo on this bench, Juliet on that other one do NOT have the same hyperplane of simultaneity.

That is an error in your understanding, not in SR itself.

On the other hand, a rocket crossing the earth at relativistic speed (Vo=0.95c for example) apprehends exactly the same universe of simultaneity.
 By saying things backwards, physicists show that they have understood nothing at all.
 And by throwing themselves on the ground holding their sides with laughter, they show that not only are they stupid, but they are arrogant.
 Their problem is that they do not know how to interpret Lorentz transformations, and do not understand the geometry of space-time (Minkowski was wrong, his "block" does not exist.
 A very simple proof that it does not fit.
 What is the apparent speed of a rocket moving towards me at speed Vo = 0.8c? As in the Langevin traveler.
Answer: Vapp = 4c
 What is the proper duration of Stella's return trip in the Langevin?
9 years.
 This means that during nine years of her proper time, Stella will see the earth come back to her, with an apparent speed of 4c.
 In elementary school, we learn that then, the apparent path is x = Vapp.Tr
 Except that this is a distance of 36 ly which drives you crazy, and requires the psychiatric hospitalization of the 569874 people interviewed.
 With their contraction distances that are totally misunderstood (if that were all) physicists all over the world, arrogant as they are, placed on the tray of a scale and me alone on the other, do not carry the weight.
 But they will never admit it.
 Examples that SR is true, but totally misunderstood because of people like Einstein or Minkowski abound.
 But I have been repeating it tirelessly for 40 years, the problem is human, almost psychiatric or religious: we do not want to see.

None of the above is evidence about understanding of semantics of times,
positions, durations or legths. Whether other things are understood is
not relevant.
--
Mikko