Early

According to certain Euclidean space perceptions the universe has three dimensions of space (length, width, height) and one dimension of time. In physics, spacetime is any mathematical model that combines space and time into a single continuum. By combining space and time into a single manifold, physicists have significantly simplified a large number of physical theories, as well as described in a more uniform way the workings of the universe at both the supergalactic and subatomic levels. Although the fifth dimension is a hypothetical extra dimension, the Kaluza-Klein theory uses the fifth dimension to unify gravity with the electromagnetic force.

Oil painting copyright (c) Trevi Bennett 2012