In a previous article, we have provided a whole new approach toward the end results of the General Theory of Relativity (GTR), based on just the energy conservation law, in the broader sense of the concept of?energy? embodying the mass & energy equivalence of the Special Theory of Relativity (STR). Thus, our approach was solely based on this latter theory (excluding the necessity of assuming the principle of equivalence of Einstein). According to our approach, the rest mass of an object embedded in a gravitational field (in fact in any field the object interacts with) decreases as much as the binding energy coming into play. Thereby, based on a general quantum mechanical theorem we prove, its internal energy, weakens as much, thus the classical red shift and time dilation.;This theorem (we did not have any room to provide a general proof of, previously), basically says that, if in a relativistic or non-relativistic quantum mechanical description, composed properly, the mass of the object in hand is multiplied by an arbitrary number, then the total energy of it, is multiplied by, and its size is divided by. This number however may very well not be arbitrary. For example, it would specify how much the rest mass of the object is altered when this is embedded in a gravitational field, leading via quantum mechanics, strikingly at once, to the end results of the GTR. This manipulation further yields the invariance of the quantity [energy x mass x size2]. We conclude that, it is this quantum mechanical invariance, necessarily strapped to the square of the Planck Constant, which constitutes a given framework regarding the matter architecture, and insures the end results of the GTR.;Not only that our approach is incomparably simple as compared to the GTR, but it also avoids all incompatibilities (such as the breaking of the relativistic relationship E=mc2), or inconsistencies (such as the breaking of the energy conservation law, as well as the breaking of momentum conservation law), or blockades (such as the impossibility of the quantization of the gravitational field), thus opens a whole clean avenue toward a unification of fields, and understanding of the matter and the universe at all levels, with just the same set of tools.;Since we do not have to use the principle of equivalence of the GTR, amongst others, we could show that, just like the gravitational field, the electric field too slows down the internal mechanism of a clock, had this interacted with the field. This result explains substantially, the retardation of the decay of the muon, bound to a nucleus.

Keywords: Mass Deficiency, Special Theory of Relativity, General of Theory of Relativity, Quantum Mechanics, Metric Change, Muon