2006-12-15 08:01:24 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Physics
According to Einstein's General Theory of Relativity, gravity is the curvature of spacetime.
A quantum theory of gravity would, it is believed, explain gravity in much the same way that other forces are explained: by an interaction between particles that invovles the exchange of "virtual particles." The virtual particle responsible for gravity has been dubbed the graviton. It is believed to be massless (which is why gravity has an unlimited range) and chargeless.
And string theory is a whole 'nother ball of wax. ;-)
2006-12-15 08:07:26 · answer #1 · answered by lehket 2 · 2⤊ 0⤋
A very simple question it would seem... The reason of gravity imo is found when you find the reason for electromagnetic fields and mass. Lets look at mass first because imo its existance is key to having gravity and EM fields. Add a unit of mass the size of a grain of sand into a system totaly empty and what do you get? Now take that system and add another unit of mass into it and what do you get then? Think about it in your head and you'll probably come to similar ideas about how the universe works / started as me. Its really like the question of the Egg vs Chicken if you know what came first you know the answer to the question. :)
2006-12-15 16:21:35 · answer #2 · answered by magpiesmn 6 · 0⤊ 1⤋
No-one knows. According to the rules of physics for every action there is an equal and opposite reaction.
This is basic mumbo jumbo to explain what happens. It fits with the Engineers equations so they are happy. Of course they will have a theory when this is proved incorrect
2006-12-15 23:38:45 · answer #3 · answered by Poor one 6 · 0⤊ 0⤋
Nobody knows. Einstein's General Theory of Relativity explains it in terms of a curvature of space-time caused by the mass, but that merely pushes the question back one layer: why does the mass do that?
2006-12-15 16:16:18 · answer #4 · answered by Anonymous · 1⤊ 0⤋
Mass.
According to Newton, everything with mass attract each other. That explains why there is gravity.
2006-12-15 16:46:22 · answer #5 · answered by Aishiteru 2 · 0⤊ 1⤋
Wrong forum. Physics does not address the issue of the reason for physical laws; it only attempts to identify effective ones, and pursue their implications.
2006-12-15 16:07:22 · answer #6 · answered by Dr. R 7 · 0⤊ 3⤋
To keep everyting in it's place
2006-12-15 16:18:36 · answer #7 · answered by bata4689 4 · 0⤊ 2⤋
So we don't throw-up?
2006-12-15 16:04:10 · answer #8 · answered by Anonymous · 1⤊ 1⤋