We observe four dimensions everyday, three spatial and time.
Time is called a dimension because it makes mathematical sense to do so.
But...theories such as string theory predict that the space we live in has in fact many more dimensions (frequently 10, 11 or 26), but that the universe measured along these additional dimensions is subatomic in size. As a result, we perceive only the three spatial dimensions that have macroscopic size.
This is not so strange as it sounds, which I'll show with an example. Imagine you are in an airplane, flying over sea. Seen from a height, the sea looks flat, two-dimensional. But when the plane looses height we start to perceive the waves, that move in a third direction we could see before.
The universe could be the same. Four macroscopic dimensions and a few more, hidden ones. We can only perceive them for instance, by the small effects their existence might have on subatomic particles.
Serious enough?
The reference is a general article on the mathematical notion of dimensions, that contains links.
2006-06-19 20:49:54
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answer #1
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answered by cordefr 7
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There are only 4 dimensions based on current accepted theory; time, x,y,z (length, width, height). Some theories predict 5 or 11 dimensions. However, these theories have not been experimentally proven. The LHC at CERN is being built in order to test the possibility of particles jumping into other dimensions in high-energy collisions. It is an international collaboration that is slated to begin running experiments in 2007.
2006-06-19 20:27:44
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answer #2
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answered by Anonymous
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The five should be length, width, depth, time and supergravity but I'm going by the 11-dimension M-theory. Many of the dimensions are just matrices upon matrices, folds in folds.
2006-06-19 20:33:33
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answer #3
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answered by Man 6
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There are an infinite number of dimensions. If you believe that there is an edge to this universe, then there must be another with different properties outside of this one and that one and so on......Visualize a man as big as two universes.....he could touch one and the other so he must be made of a different type of matter. He must be from a another dimension....Remember flat world?
2006-06-20 00:50:28
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answer #4
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answered by Anonymous
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Depends on the school of belief that you ask. Many believe there are 12 dimensions, whereas a group whose teachings I have studied recently believe there are 15.
http://www.azuritepress.com/New%20Comers/structure_of_universe.html
2006-06-19 20:07:56
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answer #5
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answered by ♣ 4
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length, width, depth, time, gravity,
2006-06-19 20:08:05
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answer #6
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answered by straightshooter 5
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