Einstein's General Equation in 5D SpaceTime+

Einstein’s general equation joined geometry and gravitation but left inertia and electromagnetism as external fields. In this work we extend that geometry into a fifth dimension—SpaceTime+—where curvature, charge, and inertia share a single origin. We show how the familiar Einstein equation emerges naturally as the four dimensional projection of a deeper five-dimensional curvature balance, and how this unified form connects microscopic inertia with macroscopic black hole structure. We find a remakable symmetry from micro (sub-atomic) scale to macro (cosmological) scale.