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The space-time length R between a moving source and the observation point iscalculated in order to substitute with it the spatial distance D, normally usedin the Newton's law of gravitation, as well as in any inverse-square-law.Fundamentally, three space-time amounts describe dynamics. The relationshipbetween position and field intensity is analytic, estimable in euclidean space,and considering a linear reference system for the time parameter. Theformulation shows compatibility with fundamental rules of classical mechanics,highlighting also hitherto unknown properties, as a perfect analogy betweenmorphological and physical parameters, such as the complete correspondencebetween the eccentricity and the momentum in the orbital motion. Moreover, theprocedure naturally contains relativistic formulation without introducing anyspecial hypothesis on light speed isotropy, asking so the question about theactual need to introduce the concept of space-time curvature for the correctinterpretation of physics phenomena.

Explanation of the Special Theory of Relativity by Analytical Geometry and Reformulation of the Inverse-Square-Law