2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/167510A concise survey of the contribution of D.I. Blokhintsev to the quantum physics, including solid state physics, physics of metals, surface physics, statistical physics and optics is given. These achievements have been considered in the context of modern development of these fields of physics.12 pages; Plenary Talk, given at XIII Int. Conf. on Selected Problems of Modern Theoretical Physics, Dubna, 22--27 June 2008; corrected typosHistory and Philosophy of Physicstext