2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/5857We present a comparison between theoretical models and the observed magnitude difference between the horizontal branch and the red giant branch bump for a sample of 53 clusters. We find a general agreement, though some discrepancy is still present at the two extremes of the metallicity range of globular clusters.2 pages, 1 figure, A.S.P. Conf. Ser., in press in Vol. 296, 2003Astrophysicstext