Abstract

A wave exists only in its propagating medium but Einstein erred to discard the medium for light wave and to introduce the non-existent 4-D spacetime continuum instead. It denied him the chance to address the intrinsic wave-quantum Unity of light and predict the new entity of ?basic substance' to compose all forms of E & m so compellingly demanded for the interconversions of E & m by the eqn. E=mc2, which is now re-derived. Unified Theory gives cogent arguments and experimental support for the existence of a real physical medium in space, the allcomposing & all-pervading 'sharmon medium' as Basic Substance. It propagates light as a wavequantum UNITY. The non-substantive abstract concepts of space & time evolve from our perceptions of successive motions & changes in the surrounding objects and cannot fuse into any concrete spacetime continuum. If existent it would retard motion of heavenly bodies and of even photons to propagate light, which is not actually observed. The non-composite static spacetime cannot undulate to transmit light. Various multidimensional spacetime continua are mere mathematical constructs and theories based on them unrealistic. Unified Theory explains from sharmon medium the constancy & invariance to source-observer motion, the two pillar postulates of Special Relativity without validating SR. It explains the Michelson-Morley and Sagnac experiments as also the observed variability of light velocity and superluminality, which invalidate Relativity Theories. Lorentz transformations do not describe any natural motion since no velocity can vary (like v) with, and be invariant (like c) to, a source-observer motion at the same time. The actual length of an object, viewed by say, 100 differently moving observers cannot undergo 100 different objective contractions at the same time, making ?contraction of length' an unrealistic concept. So is 'dilatation of time'. But the results of Gravity Probe-A are consistent with Unified Theory. Unified Theory re-explains Photoelectric Effect and Bending of Light in a Gravitational field, proving that photon has a gravitational mass and gravitation is not a curvature of nonexistent spacetime continuum. In Unified Theory, as against Relativity, no particle or energy quantum is massless or sizeless point.