2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/86367A simple procedure for restoring the constants in physical equations is introduced by a consistent consideration of the correspondence between the symbols representing physical quantities and pairs formed by numerical values and unit symbols. This procedure is applied to the very used unit systems stressing also the direct relations between the atomic, natural systems and SI.4 pages, LATEXPhysics Educationtext