Re: SpaceTime

On 06/01/2024 06:35 AM, gharnagel wrote:

Tom Roberts wrote:

>
On 5/30/24 12:48 AM, Thomas Heger wrote:

>
Spacetime is simply what exists, [...]

>
No, NOT AT ALL! You REALLY do not understand very basic physics, at a
fundamental level that distorts all your 'thinking' and everything you
write.
>
Spacetime is a MODEL of spatial-temporal relationships observed in the
real world.
>
Tom Roberts

>
I tend to think of physics that way, too, but I was watching this
episode
of How the Universe Works called "The Mystery of Space Time" and had a
few
issues with it:
>
"Space-time is the fabric of our reality"
>
"The universe is made of space-time"
>
"Whatever the substance is, time and space bound together, that's
expanding
and creating the universe we see around us.  It's everything. Space-time
is what the universe really is."
>
And they were discussing the beginning of the universe and inflation
and
expansion speeding up.  Well, I have different explanations.
>
Gary

The inflationary theory was pretty much pooh-pooh'ed by 2MASS,
then JWST has definitely paint-canned inflationary theory.
The CMBR also helped firmly establish the large-scale isotropy
of space.
That's coffee-table book physics of the not-very-scientific sort.
You'd be better off, maybe, to learn about "running constants"
and after "particle/wave duality" the "wave/resonance dichotomy",
getting past "ultraviolet catastrophe" to "infrared perestroika",
and other about super-classical extra-ordinary mathematics to
make for the most usual sort of sum-of-histories sum-of-potentials,
least-action and all while still then for symmetry, invariance,
and conservation law, symmetry-flex, quasi-invariance, and continuity law.
This is that it's the fields of potential are "real" and that
the classical field is just an instant of the fields of potential,
a field of potential itself.
Neither Big-Bang nor Steady-State hypothesis is falsifiable,
it's true, otherwise a large effort in model-fitting.
Then, for Gravity, and the gravific, "super" gravity or "shadow"
gravity or "fall" gravity if you will, and why neither "Dark Matter"
nor "Dark Energy" is anything except a model-fitting un-scientific
lack-of-explanation, is that unifiying fall gravity and the strong
nuclear force with asymptotic freedom is at least a simple and
comprehensive approach to neutron, proton, electron, photon
and mass, lifetime, charge, and flux, then reducing those four
to some three then the pairs resulting "physical constants".
Mathematics _owes_ physics continuum mechanics.