The resulting field equations provide both the equations of general relativity and of electrodynamics; the equations of motion provide the four-dimensional geodesic equation and the Lorentz force law, and one finds that electric charge is identified with motion in the fifth dimension.
The resulting field equations provide both the equations of general relativity and of electrodynamics. The equations of motion provide the four-dimensional geodesic equation. The equations of motion provide the four-the Lorentz force law. Electric charge is identified with motion in the fifth dimension. One finds this.