2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/93306A brief review of interaction-free measurements (IFM) is presented. The IFM is a solution of a quantum puzzle: How to test a bomb which explodes on every test without exploding it? This paper was given in the Oxford conference in honor of Roger Penrose.7 pages, LaTeX2e, multi3.sty, 5 eps figuresQuantum Physicstext