Re: Langevin's paradox again

Le 12/07/2024 à 17:27, tomyee3@gmail.com (ProkaryoticCaspaseHomolog) a écrit :
<http://news2.nemoweb.net/jntp?pY7stjyz5ZkXIvicxYhwWCsIV00@jntp/Data.Media:1>
 When we teach the theory of relativity, we must teach it as Jewish rabbis teach the Torah to young people, with seriousness and respect.
It is not very respectful of the public to teach such nonsense, and such poorly explained concepts.
As for the representation on the left, I absolutely agree, and this is what happens depending on the speed obtained.
I stand very far from the object, and I see it move from left to right (or right to left), while the cube accelerates from 0c to 0.999c.
As I am very far away, I do not take into account any Doppler effect, and, indeed, I observe what is drawn in the animated gif.
I can even give the equation for longitudinal contraction (in the direction of movement).
BUT the “thing” on the right, I don’t understand it. What is this?
In all things we must have respect for beauty, precision, and relativistic clarity. The right-wing “thing” has no kind of interest that we don’t explain what we want to do or what we think we see.
R.H.