2007-06-20 04:20:08 · 9 answers · asked by donpet 1 in Science & Mathematics ➔ Physics
Curved space.
2007-06-20 04:27:46 · answer #1 · answered by Yahoo! 5 · 2⤊ 0⤋
Einstein theory was consideredred the best explanation of Gravity=The curvature of space-time.And that is accepted as a concrete explanation.
Quantum Mechanics theory bucked Einstein theory.
Newton refused any further Explanation.
Fatio,Lesage and Dr. Ricardo Carezani Gave a very convincing explanation.
Big Bang gave a BIG explanation ;however nobody really understands it.
The STRINGS THEORIES (about five of them)seem to give a more realistic explanation;nevertheless they are out of words about having a real definition of what is Energy .
All I can tell you if an apple goes up it will eventually come down=Newton called it "Gravity."lol.
2007-06-20 04:37:48 · answer #2 · answered by goring 6 · 0⤊ 0⤋
this is an incomplete modern theory.
gravity is numerically equal to acceleration and can cause one body to be attracted to a more dense body.
the theory of Quantum Gravity states that gravity is propagated by elementary particles known as gravitons and these gravitons have a 0 mass and travel at the velocity of light.
when gravity acts on a body,it produces a force which we call the weight of the body.the force of gravity is one of the four natural forces(the others being strong,weak and electromagnetic).
gravity can cause time dilation,red shifting and also bend light.
Scientists are attempting to unify the theory of quantum gravity with general relativity and hence produce a unified theory of everything.although not very great progress is said to have been made.
2007-06-20 04:35:41 · answer #3 · answered by Shy Lad 3 · 2⤊ 0⤋
Stephen Hawking in "A Brief History of Time," page 92, paragraph 3, states; "Like light, gravitational waves carry energy away from the objects that emit them." The force of gravity is a particular form of energy. Because it is a form of energy, it requires an energy source, and this source must be one that is being expended (similar to gasoline being used up in your automobile). Notice in the physics trilogy that there are three separate concepts, each is an entity to itself. The trilogy is: E = mc2, m = E/c2, and c2 = E/m. The last of the three is that of a field of gravity, or that of a field of physical time. As the energy (E) value increases, the field of gravity increases. Were this value to go to zero all that would exist would be that of mass, and there would be no field of gravity formed. The heat value in this equation is that of the heat energy contained within a mass. This form of energy (gravity) not only draws mass toward the center point of it, but it also draws heat energy toward the center of a mass, so the (E) energy value increases as one moves toward the center of a mass. Were there to be a solar mass the size of our planet, and were it to have no heat energy within, then it would have no field of gravity.
A few days ago I posted a gravity experiment on http://youtube.com that is titled "Successful gravity experiment". It may be of interest. Also, at http://360.yahoo.com/noddarc there is a writing "Concepts Concerning Gravity, Time and Energy" that also deal with the subject.
2007-06-20 05:01:54 · answer #4 · answered by d_of_haven 2 · 0⤊ 0⤋
gravity can be explain as force towards to a mass
and gravity α mass and this is the theory of Newton
But according to Einstein's theory gravity is a bend of time and if there was a huge time bend it occurred a black hole
in Earth the force towards to the Earth (gravity) is 9.8ms^-2
2007-06-20 05:07:13 · answer #5 · answered by Haresh Kalsara 1 · 0⤊ 0⤋
If you can figure that out, you're smarter than Einstein.
Otherwise, the classical definition fo gravity is :
grav·i·ty [grav-i-tee] –noun, plural -ties.
1. the force of attraction by which terrestrial bodies tend to fall toward the center of the earth.
2. heaviness or weight.
3. gravitation in general.
4. acceleration of gravity.
5. a unit of acceleration equal to the acceleration of gravity. Symbol: g
6. serious or critical nature: He seemed to ignore the gravity of his illness.
7. serious or dignified behavior; dignity; solemnity: to preserve one's gravity.
8. lowness in pitch, as of sounds.
2007-06-20 04:24:04 · answer #6 · answered by civil_av8r 7 · 1⤊ 2⤋
Energy density (and matter) alter the space-time metric causing curvature in space time and altering geodesics resulting in acceleration of positive energy (mass).
2007-06-20 04:29:52 · answer #7 · answered by mistofolese 3 · 2⤊ 0⤋
The force of attraction between two objects.
2007-06-20 04:29:41 · answer #8 · answered by Anonymous · 2⤊ 2⤋
intelligent falling
2007-06-20 04:32:23 · answer #9 · answered by michiganfish h 2 · 0⤊ 1⤋