2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/223570The intrinsic unsharpness of a quantum observable is studied by introducing the notion of resolution width. This quantification of accuracy is shown to be closely connected with the possibility of making approximately repeatable measurements. As a case study, the intrinsic unsharpness and approximate repeatability of position and momentum measurements are examined in detail.Proposition 22 has been modified and some minor corrections has been madeQuantum Physicstext