"socratus" wrote in message...
...
On Oct 12, 11:06 am, "Painius" wrote:

Science does not yet
know enough about gravity to go any farther than the
theoretical math of GR. Spacetime curves, but that
can't be completely real because, well, there's really
nothing there to actually curve. So GR must mean
that "spacetime curves" thing as an abstract concept
of mathematics. How can it be anything else? head
scratch

=============================================.
SRT.
Minkowski spacetime was born in SRT.
In SRT gravity is absent.
It means Minkowski spacetime does not has gravity and this
spacetime is Pseudo-Euclid's flat spacetime.
Minkowski spacetime is absolute conception.
2.
GRT.
When Einstein put mass into Minkowski spacetime
it is curved.
When Friedman put time into Minkowski spacetime
it is curved too.
In GRT the "spacetime curves".
If Minkowski spacetime is curved it isn’t more Minkowski spacetime.
( you wrote too: The curvature is gravity.)

This “Minkowski spacetime” is now Gravity space.
Gravity space has 3-D + time.
Gravity space (3-D + time) is relative conception..
======================.
Best wishes.
Israel Sadovnik. / Socratus.

Thank you, Socratus! Both Newton and Einstein in
concert with many other great scientists have tried
and tried to deduce the nature of gravity, indeed
the very CAUSE of gravity. But Isaac Newton gave
up; he stated in a letter to a friend that he didn't
really have a clue as to what actually causes this
strange, and at the same time, *familiar* thing we
call "gravity". Newton believed that God causes
gravity.

Einstein couldn't quite pin it down either, working
most of his life after SR and GR to discover exactly
what causes gravity, so that it could be understood
how it works in terms of the other forces. He never
gave up like Newton did, but he was unable to take
general relativity beyond being a mere "description
of the effects" of gravity. He never found the cause
of gravity.

To understand what causes gravity, one must get
one's mind off of the Earth, off of simple reflecting
matter like planets and moons. One must focus
one's mind on a star... the Sun? Why not? Sun is
a perfectly good star, isn't it? It's certainly done a
great and awesome service to us by providing us
with light and warmth. The Sun is the true place
for us to begin.

Focus your mind upon the Sun, and the cause of
gravity just might SPRING forth into your mind, as
it has done into mine. And after you have thought
about this, our wonderful star, then let me know if
you still have questions about what causes gravity.
For i shall be happy to share the answer with you!

happy days and...
starry starry nights!

--
Indelibly yours,
Paine Ellsworth

P.S. "We can easily forgive a child who is afraid of the
dark; the real tragedy of life is when men are afraid
of the light."
Plato

P.P.S.: http://yummycake.secretsgolden.com
http://garden-of-ebooks.blogspot.com
http://painellsworth.net