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Originally Posted by TrAI
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Originally Posted by Sam5
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Originally Posted by Pi Man
Our universe has an extra dimension, so our 3 dimensional space is contained on the surface of the 4 dimensional sphere.
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Uhh, what do you mean our universe has an "extra dimension"? You mean there is a "w" Cartesian coordinate of space, like in w, x, y, and z? |
Hmmm... Maybe the 4th dimension needed in this hypothesis would be what we think of as time, that would be, time flows as the universe moves along this dimension... Then perhaps the overall expansion of the universe is fixed by this movement, but gravity could slow down local expansion, and maybe even time, at least for a distance... This might mean that space where there is farther between large mass clusters would expand faster to compensate for the areas that expands slower(the clusters themself)...
Or perhaps I should leave the thinking out crazy ideas about the universe to the professionals... :P |
No, everything I know/have thought about this would indicate that time and the fourth dimension for the universe wrapping around itself would have to also be mutually perpendicular (in addition to perpendicular to x,y,z of course). I could be wrong, I haven't seen it explicitly mentioned, but I feel fairly confident about this.
P.S. On the other hand, I'm not one of "the professionals", either. :wink: