| Topic: |
Science > Physics |
| User: |
"claude-morichon" |
| Date: |
10 Nov 2004 12:50:29 PM |
| Object: |
Newton's law and dark matter |
The quantic Newton's law is given by emission of gravitons . Each graviton ,
which go through a particle gives to this particle an acceleration a° equal
to the product of the speed of light by the Hubble's constant .
See the site http://perso.wanadoo.fr/claude.morichon/
specially at gravity .
When the mass are near,each particle of the mass receives the gravitons ,
emited by the particles of the other mass , which are on the surface of
captation of the particle.
But if the mass are far the distribution of the gravitons on the surface
of emission have holes , which are more big than the particles.
For a galaxy we find about ten thousand yl where the difficulties begin .
a°= 6.10(-10) m/ss and it is possible to explain the problem of pioneer
by a° .
We have a physical explanation of Milgrom's calculations , but we have no
dark matter. .
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| User: "Sam Wormley" |
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| Title: Re: Newton's law and dark matter |
10 Nov 2004 01:42:58 PM |
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Dark matter voilates neither Newton's law of graviation nor GTR. In
fact GTR fruitful tool to map Dark Matter!
Scientists Map Dark Matter, Prove Einstein Right
http://www.space.com/news/cosmic_shear_000512.html
Particle Dark Matter: Evidence, Candidates and Constraints
http://arxiv.org/abs/hep-ph/0404175
Ref: http://scienceworld.wolfram.com/physics/Gravity.html
Ref: Hartle, "Gravity: An Introduction to Einstein's General Relativity", Addison
Wesley (2003)
"A few properties of the gravitational interaction that help explain when
gravity is important can already be seen from the gravitational force law
F_grav = G m_1 m_2 / r_12^2
o Gravity is a universal interaction in Newtonian theory between all mass, and,
since E = mc^2, in relativistic gravity between all forms of energy.
o Gravity is unscreened. There are no negative gravitational charges to cancel
positive ones, and therefore it is not possible to shield (screen) the gravitational
interaction. Gravity is always attractive.
o Gravity is a long-range interaction. The Newtonian force law ia a 1/r^2
interaction. There is no length scale that sets a range for gravitational
interactions as there is for the strong and weak interactions.
o Gravity is the weakest of the four fundamental interactions acting between
individual elementary particles at accessible energy scales. The ratio of
the gravitational attraction to the electromagnetic repulsion between two
protons separated by a distance r is
F_grav G m_p^2 / r^2 G m_p^2
-------- = -------------------- = ------------- ~ 10^-36
F_elec e^2 / (4 pi e_0 r^2) (e^2/4pi e_0)
where m_p is the mass of the proton and e is its charge.
These four facts explain a great deal about the role gravity plays in physical
phenomena. They explain, for example, why, although it is the weakest force,
gravity governs the organization of the universe on the largest distance
scales of astrophysics and cosmology. These distance scales are far beyond
the subatomic ranges of the strong and the weak interactions. Electromagnetic
interactions COULD be long range were there any large-scale objects with net
electric charge. But the universe is electrically neutral, and electromagnetic
forces are so much stronger than gravitational forces that any large-scale net
charge is quickly neutralized. Gravity is left to govern the structure of the
universe on the largest scales.
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| User: "Uncle Al" |
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| Title: Re: Newton's law and dark matter |
10 Nov 2004 02:44:32 PM |
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claude-morichon wrote:
The quantic Newton's law is given by emission of gravitons .
[snip crap]
Idiot.
http://arXiv.org/abs/gr-qc/0409089
No gravitons
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
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