2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/84019The usefulness of study of hyperfine splitting in the hydrogen atom is limited on a level of 10 ppm by our knowledge of the proton structure. One way to go beyond 10 ppm is to study a specific difference of the hyperfine structure intervals 8 Delta nu_2 - Delta nu_1. Nuclear effects for are not important this difference and it is of use to study higher-order QED corrections.10 pages, presented at Hydrogen Atom II meeting (2000)Atomic Physicstext