Blue Belt
Join Date: Apr 2007 Posts: 134
7  | |
08-06-2007, 11:56 PM
| | Re: The 'curvature of space-time' is the physical expansion of matter.
Quote:
Originally Posted by Graybeard  Yes Rascal, contextually ... but I was gilding the lily.  Quote: |
North ... All things are expanding from each other. There is no centre of expansion. You seem to be of the opinion that a view from a particular spatial point in the Universe is unique from any other view.
| not really. actually I'm thinking in terms of the opposite. that no matter where in the Universe you are this " apparent " expansion is happening. which leads to a conflict of perspective , while this galaxy(s) " appears " to be moving away from us , someone on another planet would say , no , this galaxy is moving away from us and moving towards you!! Quote: |
Where ever you are in this Universe, you will see that Everything else is expanding away from you, and the further away, the greater the acceleration.
| I disagree
above Quote:
This is what Rascal is trying to explain. You need to delve further into the 'equivalence principle'. Hubble's observations do not mean that everything is racing away from the Earth. Everything is racing away from everything else, everywhere.
Rascals point is that this expansion, read acceleration, is being driven by the repulsive force of gravity. Einstein's interpretation of the Equivalence principle implies as much.
Gravity is indistinguishable from acceleration. This implies that gravity is NOT a 'force acting at a distance' as Newton thought but a straight line thru spacetime. We perceive it as a parabola thru space, a geodesic. There is much in Rascal's hypothesis.
Hope this helps a bit, and sorry for intruding, but my fingers got itchy reading this thread.
cool bananas ... greg  | |
well then my definition of the " equivalence principle " is well..... different.  | |
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