This book deals with theory and mechanics of physical aspect. The book also covers key areas of Unitary quantum theory and mechanics, standard model-SM, quantum electrodynamics, Maxwell equations, Schrödinger equation, Poisson equation, heterogeneous catalysis, quantum harmonic oscillator, mass spectrum of elementary particle, wave packet, string theory, supersymmetry, Lorentz transformations, Superluminal light propagation, energy generation, corpuscular-wave dualism, wave function, Catalytic Process Theory. This book contains various materials suitable for students, researchers and academicians of this area.