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The most genrally accepted theory of gravity is that put forward by A Einstein in his theory of general relatively that the presence off matter produces a distortion of space-time so that the motion of a particle that would normally move in a straight line follows a differant course so that it appears to be attracted to a mass (the shortest and least comprehensive account of general relativity published see Wiki for better ones).The alternative theory is that gravitational attraction is mediated by an as yet hypothetical particle the Graviton but the mass of such a particle would be so small that there is no hope of detecting individual particles
Since almost all of the mass of individual atoms is in their nucleus, gravity must be a nuclear force.
Quote from: om on 31/07/2007 07:06:42Since almost all of the mass of individual atoms is in their nucleus, gravity must be a nuclear force.Are you saying that it is exclusively a nuclear force, or merely a predominantly nuclear force?Of course, the real problem is that because gravity is such a week force, we really have little idea of how gravity behaves at sub-atomic levels.
Since almost all of the mass of individual atoms is in their nucleus, gravity must be a nuclear force.With kind regards,Oliver K. Manuelwww.omatumr.com
A lot of times people ask: what is the cause for gravity?I don't understand this question. Why there *must be* a cause? Then I could ask what is the cause of mass, the cause of time, the cause of space, the cause of energy........
Hear hear!It's as if being able to answer that particular question actually would solve anything. Because, whatever it was that 'caused' gravity would also need a cause to explain it. The best we can hope for is to be able to predict, as well as possible, how things will behave.