Why do we assume that the other 6 dimensions that are curled up are spacial

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Why do we assume that the other 6 dimensions that are curled up are spacial dimensions? Could they not be dimensions of time?
 
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Re: Hyperspace

Originally posted by Jack
Why do we assume that the other 6 dimensions that are curled up are spacial dimensions? Could they not be dimensions of time?
The other spacial dimensions arise out of necessity when one wishes to explain all of the forces in a manner that pleases both Relativity and QM.

They couldn't all be temporal dimensions, because time dimensions work slightly differently than spacial ones, and the physics of higher dimensions (in such theories as M-theory) require the spacial kind of dimension.
 
plus these extra dimensions come from strings/branes twisting and vibrating and whatnot, so spatial dimensions are required for these "spatial" components.
 
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wait .......why do we assume that time itself is a dimension....I know its because of the space-time notion in relativity.....why don't we believe that time is spatial....I know its a common stupid question.....so please try to control your words.....thanks...
 

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