Re: Absolute Insanity

Richard Hachel wrote:

>
Le 07/05/2024 à 07:07, patdolan@comcast.net (patdolan) a écrit :

>
Have a look:
 https://www.youtube.com/watch?v=6akmv1bsz1M

What's your problem, bub?

Probablement des tas de conneries dans tout ça.

Peut-etre.

Certains physiciens racontent aujourd'hui la physique comme les moines du moyen-âge devaient raconter l'ascension du petit Jésus.  >
C'est dramatique.
>
R.H.

Karl Gauss wrote, “I am coming more and more to the conviction that the
necessity of our geometry cannot be demonstrated...geometry should be ranked,
not with arithmetic, which is purely aprioristic, but with mechanics.”
I'm a bit uncomfortable with that, and so I'm uncomfortable with trying to
reduce EVERYTHING to geometry.  At least, Gauss put mechanics on an equal
footing.  I would say that his "mechanics" is dynamics.  GR seems to subsume
dynamics into geometry.
Another thing about the video bothers me.  The experience of the traveler is
described in detail, but no mention is made of what happens to the distant
observer, namely, all us guys.  Consider the GPS.  Time flows more slowly for
us sitting on the earth relative to a point far away from us.  Unlike SR
where each twin sees the other's time slowed down, an observer in a gravity
well sees the time of one who is far away flowing faster while the one far
away sees us in the well flowing slower.  This, in a sense, is an absolute
difference, not relative like the SR case.
So a guy falling into a black hole sees time in the universe he's leaving
going faster and faster until at the event horizon, all time in the universe
has passed. So even if he could come back, there would be nothing to come
back to.