2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39850The Lamb shift measurement and theory are now both a dynamically developing field and we give a review of the current data. Critical comparison of theory and experiment can be done using a value of the proton charge radius and we pay attention to several results of its determination.An invited talk presented at workshop `Hadronic Atoms and Positronium in the Stardard Model' (Dubna, 1998) 8 pages, 3 figuresHigh Energy Physics - PhenomenologyAtomic Physicstext