2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157882All paradoxes concerning faster-than-light signal propagation reported in recent experiments can be dispelled by using imaginary time in a quantum framework. I present a proposal of testing imaginary time in a total reflection.5 pages, exactly the same as that published 10 years agoQuantum PhysicsGeneral Relativity and Quantum CosmologyOpticstext