FERMI, Enrico. Sul calcolo degli spettri degli ioni. Sulla teoria delle strutture iperfini. Le orbite s degli elementi. Roma, 1930-1934
In 4to; 3 estratti, stampati autonomamente con copertine e paginazione propria, dalle "Memorie della R. Accademia d'Italia"; copertine editoriali a stampa. Esemplari perfetti.
Tre prime edizioni stampate a sé. Queste tre importanti memorie inerenti alla fisica moderna furono pubblicate da Fermi sotto gli auspici dell'Accademia d'Italia all'interno delle "Memorie della Reale Accademia d' Italia: Classe di scienze fisiche matematiche e naturali", prima della sua partenza per gli Stati Uniti.Le orbite s degli elementi è un lavoro di Enrico Fermi, le altre due furono scritte con la collaborazione di E. Segrè ed E. Amaldi. Enrico Fermi (1901 - 1954), italian physicist, gained the Nobel prize for physics in 1938 for research on the making of artificial radioactive substances. In 1934 he was the first to bombard nuclei of heavy elements with neutrons and thus to obtain transmutations. Since 1939 he has been professor of physics at Columbia University. In 1942 he was responsible for the construction of the first atomic pile" (Howard).

4to, 3 extracts, printed independently with covers and own paging, from “Memoria della R. Accademia d’Italia”; editorial covers. Excellent conditions.
Three first editions printed on their own. These three important memoirs relating to modern physics were published by Fermi under the auspices of the Accademia d'Italia within the "Memorie della Reale Accademia d' Italia: Classe di scienze fisiche matematiche e naturali ", before his departure for the United States. Le orbite s degli elementi is a work of Enrico Fermi, the other two were written with the collaboration of E. Segrè and E. Amaldi. Enrico Fermi (1901 - 1954), italian physicist, gained the Nobel prize for physics in 1938 for research on the making of artificial radioactive substances. In 1934 he was the first to bombard cores of heavy elements with neutrons and thus to obtain transmutations. Since 1939 he has been professor of physics at Columbia University. In 1942 he was responsible for the construction of the first atomic pile".