2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/176157We discuss two effects predicted by the general theory of relativity in the context of Rindler accelerated observers: the gravitational spectral shift and the time delay of light. We show that these effects also appear in a Rindler frame in the absence of gravitational field, in accordance with the Einstein's equivalence principle.12 pages, 3 figuresGeneral Relativity and Quantum Cosmologytext