When someone mentions "different dimensions," we tend to think of things ... The fact that we can perceive only four dimensions of space can be explained by one of two mechanisms: either the ...

These different aspects are what govern the ... The existence of extra dimensions is explained using the Calabi-Yau manifold, in which all the intrinsic properties of elementary particles are ...

While still theoretical and highly debated, the mathematics of string theory suggests that there could be multiple dimensions of time. Columbia University's theoretical physicist Brian Greene ...