The assumptions of Newtonian physics correspond to the clothes we always thought that the Emperor was wearing: a universal time whose uniform passage equally affects every part of the universe; a separate space, independent though empty; and the belief that there exists somewhere in the universe a place which stands absolutely still, quiet and unmoving. Every one of these assumptions has been proven untrue (not useful) by the special theory of relativity. The Emperor wasn’t wearing them at all. The only motion in the physical universe is motion relative to something else. There is no separate
...more
