2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/218502Using Bridge Theory to describe the electromagnetic interactions occurring between high energy pairs of particles, we predict an anomalous self-gravitational red-shift in the frequency of the EM source produced during the interaction. The extreme consequence is the introduction of an upper limit in the electromagnetic spectrum. Hypothesizing a scattering energy greater than 5.55 10^22 Mev,the source collapses under his events horizon, becoming a neutral spin less micro-black hole: perfect candidates to contribute to the dark matter of the Universe.11 pages, 4 figures. SIF conference 2006, Torino (Italy). Submitted APJLGeneral Physicstext