Re: Incorrect mathematical integration

Le 19/07/2024 à 23:45, hitlong@yahoo.com (gharnagel) a écrit :

On Fri, 19 Jul 2024 19:51:32 +0000, Richard Hachel wrote:

formula that is w=(v +u)/(1+v.u/c²) or here w=0.8c.

<http://news2.nemoweb.net/jntp?EKV4LWfwyF4mvRIpW8X1iiirzQk@jntp/Data.Media:1>

That's not a valid comparison, Dr. H.

Yes, I think the comparison is quite good.
When someone asks me a question about adding speeds, and seems to believe that all this is Newtonian, I point out to them that there are precise laws, and that we cannot do what we want in relativity.
I therefore explain that you must use either:
<http://news2.nemoweb.net/jntp?lCOxaQRvJu9aupwBdiiuPvUmqVI@jntp/Data.Media:1>
Either :
<http://news2.nemoweb.net/jntp?lCOxaQRvJu9aupwBdiiuPvUmqVI@jntp/Data.Media:2>
Depending on whether we work at observable speeds or at real speeds
(quickly, I am told, but I don't have this term).
The same goes for Paul's mathematically very correct formula, but which does not apply, for me, in RR, and which gives a false result for proper times.
Paul adds up all the small improper segments of time, because he thinks a priori he can do it without problem. Now, in fact, an immense problem arises, we cannot do it, but the trap is terrible.
R.H.