Gravity / GRT and the Big Bang

socratus

socratus
Dec 10, 2008
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Gravity / GRT and the Big Bang
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a) In 1917 Einstein applied his theory of general relativity
in the universe, and suggested a model of a homogenous, static,
spatially curved universe. . . . He then fiercely resisted
the view that the universe was expanding, despite his
contemporaries' suggestions that this was the case.
b). . . . in 1927, Georges Lemaître,
. . . concluded that the universe was expanding by combining
general relativity with astronomical observations.
Yet, Einstein still refused to abandon his static universe.
c) However, in an April 1931 . . .Einstein finally adopted
a model of an expanding universe.
d) In 1932 he teamed up with the Dutch theoretical physicist
and astronomer, Willem de Sitter, to propose an eternally
expanding universe which became the cosmological model
generally accepted until the middle of the 1990s.
https://www.sciencedaily.com/release...0217102545.htm
e) Later Lemaître's idea became known as the "Big Bang theory''.
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Was " Hot Big Bang theory'' created from the GRT or vice versa?
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socratus

socratus
Dec 10, 2008
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According to modern scientific view “The Big Bang”
would not occur in the absence of gravity forces.
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1 - Gravity is a fundamental force in nature.
Gravity is the force that attracts two bodies toward each other.
On a small distances gravity forces are much weaker than EM forces,
but on huge cosmic distances - gravity forces are very strong
2 - EM forces don't work on a huge cosmic distances
3 - God doesn't exist
(modern scientific view)
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Blackleaf

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Oct 9, 2004
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Was it a big bang or did it just seem big because there wasn't anything else around at the time to drown it out?
 

socratus

socratus
Dec 10, 2008
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''Big Bang is a well-tested and well-understood
scientific theory'' . . . . thanks to CMBR.
CMBR is a fact. . . . but to know this fact doesn't mean
to understand situation. CMBR can have another origin.
For example . . . . CMBR as result of vacuum fluctuation.
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socratus

socratus
Dec 10, 2008
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The Cosmic Space and Quantum Gravity
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The Universe (as a whole) is flat, smooth, homogenous, isotropic, cold and (as a whole) in an equilibrium, static state.
1 - Cosmic Space is ''pretty flat'' to within 0,5%, according to the WMAP 2013 measurement.
2 - In the Cosmic Space (as a whole) there are very few ordinary matter (about 5%) and the other 95% is unknown ''dark energy'' and ''dark matter''
3 - There is a fundamental fact that the critical density in the Universe (as a while) is about 9.9 x 10^-30 g/sm^3. That masses of density cannot ''close'' the Cosmic Space into a sphere and therefore the Universe as a whole is an infinitely flat continuum (after every cosmic event horizon there is another similar cosmic event horizon and so and so . . . to infinity)
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1 - More than a century ago Boltzmann considered a “cosmology” where the observed universe should be regarded as a fluctuation out of some equilibrium state (the entropy of a closed system always increases: S = klogW )
2 - According to Quantum theory there are cosmic quantum vacuum fluctuations: E - h*f
3 - The unity between Quantum energy-fluctuations and Boltzmann micro-thermodynamics fluctuations (h*F + kTlogW) saves the universe from heat death and create basis for quantum gravity (star formation)
4 - If the matter Universe started from zero vacuum (T=0K) then the first chemical element must be helium - 4 ---> helium - 3 ---> hydrogen ---> . . . etc
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