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Subject: Re: Incorrect mathematical integration
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Date: Fri, 19 Jul 24 21:58:01 +0000
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From: Richard Hachel <r.hachel@wanadou.fr>
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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.