What led the universe to expand only in 4 dimensions after the big bang? Why not in less than or greater than 4 dimensions? In other words, just before a moment of the big bang; the universe was just ...
Is it reasonable to visualise an additional dimension of time as a part of 4th dimensional spacetime
[EDIT] In the spirit of asking a "good question", this question is considerably more refined that the one I decided to blurt out earlier thanks to a little additional research and nudges from ...
Is the dimensionality of spacetime in all usual models constant?
I'm just a layman here so please bear with me if I don't get all the words or theories by correct name or whatever. I hope it will be clear enough what my question is. Here goes: When I read articles ...
String theory postulates 6 extra dimension, all too small to be observed. The best description of a small dimension is that of an ant walking on a flagpole: The ant observes that the flagpole allows ...