2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89341The derivation becomes possible when we find a new formalism which connects the relativistic mechanics with the quantum mechanics. In this paper, we explore the quantum wave nature from the Newtonian mechanics by using a concept: velocity field. At first, we rewrite the relativistic Newton's second law as a field equation in terms of the velocity field, which directly reveals a new relationship connecting to the quantum mechanics. Next, we show that the Dirac equation can be derived from the field equation in a rigorous and consistent manner.LaTeX, 4 pages, 2 figures, rewriten partlyQuantum Physicstext