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- For other uses, see Gravitation (disambiguation), Gravity (disambiguation).
In physics, gravitation or gravity is the tendency of objects with mass to accelerate toward each other. Gravitation is one of the four fundamental interactions in nature, the other three being the electromagnetic force, the weak nuclear force, and the strong nuclear force. Gravitation is the weakest of these interactions, but acts over great distances and is always attractive. In classical mechanics, gravitation arises out of the force of gravity (which is often used as a synonym for gravitation). In general relativity, gravitation arises out of spacetime being curved by the presence of mass, and is not a force. In quantum gravity theories, either the graviton is the postulated carrier of the gravitational force, or time-space itself is envisioned as discrete in nature, or both.
The gravitational attraction of the Earth endows objects with weight and causes them to fall to the ground when dropped (the earth also moves toward the object, but this is so small the effects are negligible at best ). Moreover, gravitation is the reason for the very existence of the earth, the sun and other celestial bodies; without it matter would not have coalesced into these bodies and life as we know it would not exist. Gravitation is also responsible for keeping the earth and the other planets in their orbits around the sun, the moon in its orbit around the earth, for the formation of tides, and for various other natural phenomena that we observe.
More on [ Gravitation ]
"Gravitation is not responsible for people falling in love." - Albert Einstein (via kari-shma) (via... http://tumblr.com/xsd4riope
helllloworld (Jade Hua) Thu, 17 Dec 2009 23:52:13 -0000
"Gravitation is not responsible for people falling in love." - Albert Einstein (via kari-shma) (via... http://tumblr.com/xsd4riope
RT @RAgainstSlavery Gravitation is not responsible for people falling in love. ~Albert Einstein #quote
Theresa_MI (Theresa Anne) Thu, 17 Dec 2009 23:44:22 -0000
RT @RAgainstSlavery Gravitation is not responsible for people falling in love. ~Albert Einstein #quote
RT @HPSelf: Time and space and gravitation have no separate existence from matter. --Albert Einstein
talesbytom (Thomas Cagley Sr.) Thu, 17 Dec 2009 23:39:54 -0000
RT @HPSelf: Time and space and gravitation have no separate existence from matter. --Albert Einstein
RT @RAgainstSlavery: Gravitation is not responsible for people falling in love. ~Albert Einstein #quote
shahmaran (Banu Ãiçek ) Thu, 17 Dec 2009 23:36:44 -0000
RT @RAgainstSlavery: Gravitation is not responsible for people falling in love. ~Albert Einstein #quote
RT @RAgainstSlavery: Gravitation is not responsible for people falling in love. ~Albert Einstein #quote
mtesll (Tere) Thu, 17 Dec 2009 23:32:16 -0000
RT @RAgainstSlavery: Gravitation is not responsible for people falling in love. ~Albert Einstein #quote
RT @HPSelf: Time and space and gravitation have no separate existence from matter. --Albert Einstein
darjimd (Mehal Darji) Thu, 17 Dec 2009 23:31:56 -0000
RT @HPSelf: Time and space and gravitation have no separate existence from matter. --Albert Einstein
Abolish a Force - Describes qualitatively how gravity can be accounted for by nuclear forces.
Meta Description: [ 'Perceptions' science - abolish a FORCE by yourself while superstitious 'scientists' cling to superstition ]
American Antigravity - Commercial Antigravity research and products. Site contains videos, graphics, plans and schematics.
Meta Description: [ Antigravity, Space, and Emerging Tech news, video, photos, and more! ]
An alternative theory of gravity - There is no 'gravitational force'. The universe is expanding, and 'gravity' is one of the results.
Antigravity.org - Sergey Ivanenko explains gravity as an inertial phenomenon caused by movement of the universe with respect to higher dimensions.
Dipole AntiGravity - Introduction of a new physical theory of anti-gravity.
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Dr Vels Science - Thoughts on gravity and space, as well as creation in general.
Meta Description: [ BBS Networks & Hafa Adai Exchange World's largest BBS 1/2 Million Shareware Files. A BBS that has won Great Reviews. 1/2 Million Shareware Files Multiple BBS type Networks Fido Rime Wildnet plus interactive gaming +bbs ]
Galactic Gravitation Calculator - Demonstrates how new quantum gravity theory explains orbits in spiral galaxies without Dark Matter.
Meta Description: [ Galactic Gravitation Calculator software. Demonstrates how new quantum gravity theory explains orbits in spiral galaxies without Dark Matter. ]
Gravitational Force Vectoring - A site describing how gravity can be created in the context of the conservation of energy and quantum mechanics, with information on related events.
Meta Description: [ Cosmic and atomic organization has foundation in geometry, which forms dimensions of independence, the duality and self-organization ]
Gravitational Waves Sensor - Data from sensor which is claimed to observe gravitational waves.
Meta Description: [ A new type of instrument for gravitational waves detection ]
Gravity - the Process of Acceleration - A paper on Dr. Samuel V. Miensinompe's theory of relative time-space.
Gravity and Inertia Redefined - An alternate theory of gravity and inertia suggested by the implied consequences of a Higgs energy field.
Gravity and Space - A continuous, magnetic field fills universal space; and also permeates all matter. Hence, a virtual continuum of a single, real field describes gravity.
Meta Description: [ This website expresses some unique views on the fundementels of nature--including the workings of Gravity and the workings of Light. ]
Gravity Due To Space Flow - Part two of a paper explaining how gravity is originated by means of the spacetime structure falling into a mass.
Meta Description: [ Part two of the paper, explaining how gravity is originated by means of the spacetime structure falling into a mass ]
Gravity Explained - An attempt to describe gravity as a force.
Meta Description: [ This is science. Both logical and intuitive, no portion of this is either intangible or metaphysical. ]
Gravity Made Simple - An unusual description of how gravity may work based on time and motion and the superstring theory where all things are vibrations.
Gravity Research by Morton F. Spears - Provides downloadable reports on a new approach to understanding gravity based on electrostatic relationships and the permittivity of open space.
Gravity theory of Takeda - Mechanism and the application of gravity
Meta Description: [ The mechanism and the application of gravity. ]
Is Gravity Caused by Tension in the Fabric of Space-Time - A brief article by Robert J. Lee arguing this theory.
Meta Description: [ I do not believe that gravity pulls us. I think push is a more accurate concept. A heavenly body such as the earth displaces the fabric of space-time and the result is an effect of tension against the surface of the earth. ]
Lorentz-Poincare relativity and a scalar theory of gravitation - Special relativity may be derived from Lorentz contraction. It follows that the relativity principle could be broken in the presence of gravitation. This seems to work.
Process and Installation for Generating a Gravitational Field - Includes a patent application for such a device, with diagrams.
Meta Description: [ Process & Installation for Generating a Gravitational Field ]
Spin-Orbit Duality, Astrodynamics and Anti-Gravity - Seen from orbit, the earth rotates. Spin-orbit duality therefore allows antigravity to be mathematically specified. Equations and theories can be seen to emerge from the known.
Meta Description: [ The mathematics of antigravity derived from that of orbit ]
The Gravnetic Field - The existence of a vector field is shown, originated by all moving masses which exerts a force on all other nearby moving masses.
Meta Description: [ Theory on the existence of the Gravnetic Field ]
When Gravity Fails - Article looking at Russian attempts to create an anti-gravity system.
Meta Description: [ Antigravity Research ]
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