2006-10-01 06:37:42 · 11 answers · asked by nerdwannabe 1 in Science & Mathematics ➔ Physics
String, jam, bees, sodium thiosulfate and wanton violence.
2006-10-01 06:45:34 · answer #1 · answered by Chrisso De La Zouch 3 · 1⤊ 3⤋
The honest answer is: No One Knows!
There are at least two views.
1. That given by Einstein in his General Theory of Relativity of 1916. In this view, gravity is the observed effect of the curvature of 4-dim spacetime (curvature is best understood as being the way non-flat things curve! Think of the surface of an orange; there's an overall curvature, the sphere shape; but if you look from close up there are lots of bumps each curving this way or that). Gravity happens when a particle gets caught in a curvature "valley"; it flows "down" so to speak.
2. the other view of gravity is that of particle physics (which is linked to quantum physics). Gravity is due to the exchange of graviton particles between other particles. In this view, gravity is a same type of whatever as the electromagnetic force. Problem is no one has ever observed a graviton.
Moreover the two views above are not quite compatible. Physicists have been working on this unification of Relativity and Quantum Physics for almost 3 quarters of a century to no avail yet.
2006-10-01 06:52:17 · answer #2 · answered by bluecloud23 2 · 2⤊ 0⤋
Don't know. What we do know is that it takes mass to cause the gravitational effect. What we don't know is the mechanism that causes that effect.
Some models say its gravitons, very tiny messenger quanta that carry the force of gravity from mass to mass at the speed of light.
Other models say its the curvature of space itself caused by the presence of a mass. In this model, physicists like to use a rubber sheet with a bowling ball in the middle of the sheet. The sheet curves, like space, and when dropping a golf ball onto the sheet, the ball will follow the curve and be "pulled" into the bowling ball.
Gravitons have never been observed; they are strictly theoretical. But the curve in space near celestial bodies has been observed. Thus, the curve in space theory is more than a theory put forth by relativity, it is a proved fact. That being said, perhaps the gravitons are the cause for space curving...who knows?
2006-10-01 06:49:10 · answer #3 · answered by oldprof 7 · 2⤊ 0⤋
What is gravity made of?
Re: What is gravity made of? Current Queue | Current Queue for Physics | Physics archives ... Query: Subject: What is gravity made of? Date: Sun Oct 11 ...www.madsci.org/posts/archives/oct98/909712959.Ph.q.html
2006-10-01 06:40:51 · answer #4 · answered by Anonymous · 0⤊ 1⤋
Gravity is made up of Mass. When you assemble mass you get gravity
2006-10-01 07:08:39 · answer #5 · answered by Dr M 5 · 0⤊ 2⤋
gravitation or gravity is the tendency of objects with mass to accelerate toward each other. in this way it is an attractive force between bodies with some mass it is composed of nothing. just like other forces it is also a force
2006-10-01 06:42:57 · answer #6 · answered by Cool guy 2 · 0⤊ 1⤋
Gravity is an energy force. It has no matter, therefore it is made of nothing! Gravity is present throughout our expanding universe and is caused by the enormous black hole at the center of our universe left over from the Big Bang.
2006-10-01 06:47:40 · answer #7 · answered by Anonymous · 0⤊ 4⤋
Gravity is force.
2006-10-01 06:44:52 · answer #8 · answered by Alley S. 6 · 0⤊ 2⤋
Gravity is a curve in spacetime. It isn't made of anything.
2006-10-01 06:39:54 · answer #9 · answered by Anonymous · 0⤊ 1⤋
gravity is a force that pulls everything to the centre/center of the earth. it is not made up of anything
2006-10-01 11:11:47 · answer #10 · answered by mcdonaldcj 6 · 0⤊ 2⤋
Eyesonthescreen and bluecloud23 have it right.
We truly have no idea what gravity is "made of".
2006-10-02 02:47:37 · answer #11 · answered by Math_Guru 2 · 0⤊ 0⤋