- Segrè , Emilio Gino
- (1905–1989) Italian–American physicistSegrè, who was born at Tivoli in Italy, studied at the University of Rome under Enrico Fermi and obtained his doctorate there in 1928. He worked with Fermi until 1936, when he was appointed director of the physics laboratory at Palermo. He was dismissed for political reasons in 1938 and moved to America where he worked at the University of California, Berkeley, from 1938 to 1972, apart from the years 1943–46, which he spent at Los Alamos working on the development of the atom bomb. He became a professor in 1945.Segrè made a number of significant discoveries in his career. In 1937 he filled one of the gaps in the periodic table at atomic number 43 when he showed that some molybdenum that had been irradiated with deuterium nuclei by Ernest Lawrence contained traces of the new element. As the first completely artificial element they gave it the appropriate name, technetium. Segrè played a part in the detection of element 85, astatine, and also plutonium in 1940.His main achievement however was the discovery of the antiproton with Owen Chamberlain in 1955, for which they shared the 1959 Nobel Prize for physics. Segrè calculated that producing an antiproton would require about 6 billion electron-volts (Bev), which could be provided by the recently constructed bevatron at the University of California. He therefore went on to bombard copper with protons that had been accelerated to 6 Bev, thus yielding a large number of particles. As only one antiproton was produced to about 40,000 other particles his next problem was to detect this rare event.This was done by noting that the antiproton would travel much faster than the other particles and at such speeds it would give off Cherenkov radiation in certain media and could thus be detected. The few particles that produced this radiation could more easily be screened to see if any of them possessed the necessary properties. Before long Segrè had identified antiprotons at the rate of about four per hour. The work of the California group was soon confirmed by Italian physicists who began to detect the tracks of antiprotons on photographic plates.
Scientists. Academic. 2011.
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SEGRÈ, EMILIO GINO — (1905–1989), nuclear physicist and Nobel Prize laureate. Segrè, who was born in Tivoli, Italy, studied at Rome University, where he later assisted Enrico Fermi in research on the use of neutrons as missiles to break up the uranium atom. He… … Encyclopedia of Judaism
Segrè, Emilio Gino — (1905–89) Italian physicist and Nobel laureate, 1959. During the 30s Segrè helped Enrico Fermi in his research into the neutron bombardment of uranium atoms. Later he bombarded molybdenum (element number 42) with deuterons and was able to… … Who’s Who in Jewish History after the period of the Old Testament
Segrè, Emilio (Gino) — born Feb. 1, 1905, Tivoli, Italy died April 22, 1989, Lafayette, Calif., U.S. Italian born U.S. physicist. He worked under Enrico Fermi before becoming director of the physics laboratory at the University of Palermo in 1936. In 1937 he discovered … Universalium
Segrè, Emilio (Gino) — (1 feb. 1905, Tívoli, Italia–22 abr. 1989, Lafayette, Cal., EE.UU.). Físico estadounidense nacido en Italia. Trabajó bajo las órdenes de Enrico Fermi antes de convertirse en director del laboratorio de física de la Universidad de Palermo en 1936 … Enciclopedia Universal
Emilio Gino Segre — Emilio Gino Segrè Emilio Gino Segrè Emilio Gino Segrè est un physicien italien né le 1er février 1905 à Tivoli, dans le Latium, et mort le 22 avril 1989 aux États Unis … Wikipédia en Français
Emilio Gino Segré — Emilio Gino Segrè Emilio Gino Segrè Emilio Gino Segrè est un physicien italien né le 1er février 1905 à Tivoli, dans le Latium, et mort le 22 avril 1989 aux États Unis … Wikipédia en Français
Emilio Gino Segrè — Saltar a navegación, búsqueda A la izquierda foto de identidad de Segrè en Los Alamos, a la derecha un retrato de 1959. Emilio Gino Segrè … Wikipedia Español
Emilio Gino Segrè — Segrè en 1954 Naissance 1er février 1905 Tivoli (Italie) Décès 22 a … Wikipédia en Français
Emilio Gino Segrè — Emilio Segrè (Foto auf seinem Los Alamos Dienstausweis während des 2. Weltkriegs) Emilio Gino Segrè (* 1. Februar 1905 in Tivoli, Italien; † 22. April 1989 in Lafayette, Kalifornien) war ein Itali … Deutsch Wikipedia
Segrè, Emilio — ▪ Italian American physicist in full Emilio Gino Segrè born Feb. 1, 1905, Tivoli, Italy died April 22, 1989, Lafayette, Calif., U.S. Italian born American physicist who was cowinner, with Owen Chamberlain (Chamberlain, Owen) of the United… … Universalium