Guide Note: The fourth dimension is often identified with time, and as such is used to explain space-time in Einstein's theories of special relativity and general relativity.
Fast Facts:
- There is a raging debate going on (and probably will go on forever) about whether the fourth dimension is time, or whether it is a 4th spatial dimension.
- In a 4D world, there is another directional axis which is perpendicular to the X, Y, and Z known axes.
- We are unable to experience the 4D vision. We only can make a projection of a 4D object.
