On the constitution of atoms and moleculesNote 33 — PART II.—SYSTEMS CONTAINING ONLY A SINGLE NUCLEUS [23] [24].Reading editionSee J. Franck, Verh. d. Deutsch. Phys. Ges. xii. p. 613 (1910).◇Copy noteReturn to PART II.—SYSTEMS CONTAINING ONLY A SINGLE NUCLEUS [23] [24].