Re: Space-time interval (2)

Liste des GroupesRevenir à p relativity 
Sujet : Re: Space-time interval (2)
De : python (at) *nospam* invalid.org (Python)
Groupes : sci.physics.relativity
Date : 12. Aug 2024, 20:06:03
Autres entêtes
Organisation : CCCP
Message-ID : <v9dmer$3dtvr$3@dont-email.me>
References : 1
User-Agent : Mozilla Thunderbird
Le 12/08/2024 à 19:35, M.D. Richard "Hachel" Lengrand a écrit :
The notion of space-time interval should be abandoned because it is complex and leads to nothing, except final errors.
This is your typical mantra : you read a few popular science stuff,
too quickly and nothing more, then you fail to understand the point
and put up some fancy idea out of your *ss and as you are a stuffed
shirt pompous imbecile you will brag about it for years.
Could you consider once to actually take time to *read* papers,
articles, courses, whatever and *think* instead of acting like
a wanker with your very small pee-pee?

What is the space-time interval?
A metric, measured in meters.
Meters, furlong, inches, it doesn't matter.
It is a number associated to a pair of events with dimension
of a length.

It is mostly an abstract thing that is not very useful.
"abstract" means "Richard Lengrand does not understand". For the
rest of us abstraction is a virtue of intelligence.

So we set ds²=dl²-c²t².
Why and for WHAT?
For nothing.
For fun.
No, because an invariant scalar quantity is what allow to do
geometry on top of coordinates systems.

Hachel notation is much more practical, because it does not need the notion of complexes to establish a perfect Pythagoreanism.
"pythagoreanism" is a meaningless word.
There is no need for complex numbers when it comes to space-time
interval. But even if it would, what the problem? You do have issues
with basic math, including complex numbers, this is none of our
business.

[snip nonsensical wanking]

Finally, what is ds²? It is just -c².Tr²
No! ds^2 = c^2 dt^2 - dl^2. For some kind of pairs of event
it could be equal to c^2 dt^2 but not for all. I tried (in vain)
to explain this to you on f.s.p.

Let's pose Tr²=-ds².c² and everything becomes much simpler and much more practical.
It is not simpler, it is not practical. And it is FALSE.

Simplicity is disconcerting.
 In general, we don't like it too much.
No we don't like contradictions and fallacies. You do.

Date Sujet#  Auteur
12 Aug 24 * Space-time interval (2)72Richard Hachel
12 Aug 24 +* Re: Space-time interval (2)70Python
12 Aug 24 i`* Re: Space-time interval (2)69Richard Hachel
12 Aug 24 i +- Re: Space-time interval (2)1Python
13 Aug 24 i `* Re: Space-time interval (2)67Paul.B.Andersen
13 Aug 24 i  +* Re: Space-time interval (2)65Richard Hachel
13 Aug 24 i  i+* Re: Space-time interval (2)2Python
13 Aug 24 i  ii`- Re: Space-time interval (2)1Richard Hachel
13 Aug 24 i  i+* Re: Space-time interval (2)58Paul.B.Andersen
13 Aug 24 i  ii+- Re: Space-time interval (2)1Richard Hachel
13 Aug 24 i  ii+- Re: Space-time interval (2)1Richard Hachel
14 Aug 24 i  ii`* Re: Space-time interval (2)55Richard Hachel
14 Aug 24 i  ii +* Re: Space-time interval (2)50gharnagel
14 Aug 24 i  ii i+* Re: Space-time interval (2)10Richard Hachel
14 Aug 24 i  ii ii+- Re: Space-time interval (2)1gharnagel
14 Aug 24 i  ii ii+- Re: Space-time interval (2)1gharnagel
14 Aug 24 i  ii ii+* Re: Space-time interval (2)4Paul.B.Andersen
14 Aug 24 i  ii iii+- Re: Space-time interval (2)1Maciej Wozniak
14 Aug 24 i  ii iii`* Re: Space-time interval (2)2Richard Hachel
15 Aug 24 i  ii iii `- Re: Space-time interval (2)1Paul.B.Andersen
15 Aug 24 i  ii ii+* Re: Space-time interval (2)2Python
15 Aug 24 i  ii iii`- Re: Space-time interval (2)1Python
15 Aug 24 i  ii ii`- Re: Space-time interval (2)1gharnagel
14 Aug 24 i  ii i`* Re: Space-time interval (2)39Maciej Wozniak
14 Aug 24 i  ii i +- Re: Space-time interval (2)1Mubarak Schitov
14 Aug 24 i  ii i `* Re: Space-time interval (2)37Richard Hachel
14 Aug 24 i  ii i  `* Re: Space-time interval (2)36Python
14 Aug 24 i  ii i   `* Re: Space-time interval (2)35Richard Hachel
14 Aug 24 i  ii i    +* Re: Space-time interval (2)2Python
15 Aug 24 i  ii i    i`- Re: Space-time interval (2)1Paul.B.Andersen
14 Aug 24 i  ii i    `* Re: Space-time interval (2)32Python
14 Aug 24 i  ii i     +* Re: Space-time interval (2)30Richard Hachel
14 Aug 24 i  ii i     i+* Re: Space-time interval (2)8gharnagel
14 Aug 24 i  ii i     ii`* Re: Space-time interval (2)7Richard Hachel
14 Aug 24 i  ii i     ii `* Re: Space-time interval (2)6gharnagel
14 Aug 24 i  ii i     ii  `* Re: Space-time interval (2)5gharnagel
14 Aug 24 i  ii i     ii   +- Re: Space-time interval (2)1Ross Finlayson
14 Aug 24 i  ii i     ii   `* Re: Space-time interval (2)3Maciej Wozniak
15 Aug 24 i  ii i     ii    `* Re: Space-time interval (2)2gharnagel
15 Aug 24 i  ii i     ii     `- Re: Space-time interval (2)1Belgov Turpaev
14 Aug 24 i  ii i     i+- Re: Space-time interval (2)1Python
15 Aug 24 i  ii i     i+* Re: Space-time interval (2)18Mikko
15 Aug 24 i  ii i     ii`* Re: Space-time interval (2)17Richard Hachel
15 Aug 24 i  ii i     ii +* Re: Space-time interval (2)4Python
15 Aug 24 i  ii i     ii i`* Re: Space-time interval (2)3Richard Hachel
15 Aug 24 i  ii i     ii i +- Re: Space-time interval (2)1Python
15 Aug 24 i  ii i     ii i `- Re: Space-time interval (2)1Python
15 Aug 24 i  ii i     ii +* Re: Space-time interval (2)9gharnagel
15 Aug 24 i  ii i     ii i+* Re: Space-time interval (2)2Python
15 Aug 24 i  ii i     ii ii`- Re: Space-time interval (2)1gharnagel
15 Aug 24 i  ii i     ii i`* Re: Space-time interval (2)6Python
15 Aug 24 i  ii i     ii i `* Re: Space-time interval (2)5Maciej Wozniak
15 Aug 24 i  ii i     ii i  `* Re: Space-time interval (2)4Python
15 Aug 24 i  ii i     ii i   `* Re: Space-time interval (2)3Maciej Wozniak
15 Aug 24 i  ii i     ii i    `* Re: Space-time interval (2)2Richard Hachel
15 Aug 24 i  ii i     ii i     `- Re: Space-time interval (2)1Maciej Wozniak
16 Aug 24 i  ii i     ii `* Re: Space-time interval (2)3Mikko
16 Aug 24 i  ii i     ii  `* Re: Space-time interval (2)2Richard Hachel
17 Aug 24 i  ii i     ii   `- Re: Space-time interval (2)1Mikko
15 Aug 24 i  ii i     i`* Re: Space-time interval (2)2Paul.B.Andersen
15 Aug 24 i  ii i     i `- Re: Space-time interval (2)1Maciej Wozniak
14 Aug 24 i  ii i     `- Re: Space-time interval (2)1Python
14 Aug 24 i  ii +* Re: Space-time interval (2)3Paul.B.Andersen
14 Aug 24 i  ii i`* Re: Space-time interval (2)2Richard Hachel
15 Aug 24 i  ii i `- Re: Space-time interval (2)1Paul.B.Andersen
15 Aug 24 i  ii `- Re: Space-time interval (2)1Thomas Heger
15 Aug 24 i  i`* Re: Space-time interval (2)4Mikko
15 Aug 24 i  i `* Re: Space-time interval (2)3Richard Hachel
15 Aug 24 i  i  +- Re: Space-time interval (2)1Python
17 Aug 24 i  i  `- Re: Space-time interval (2)1Mikko
14 Aug 24 i  `- Re: Space-time interval (2)1guido wugi
2 Sep 24 `- Re: Space-time interval (2)1JanPB

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