Dempster , Arthur Jeffrey
- Dempster , Arthur Jeffrey
(1886–1950) Canadian–American physicist
Dempster was born in Toronto, Ontario, in Canada and educated at the university there. He emigrated to America in 1914, attended the University of Chicago, obtained his PhD in 1916, and began teaching in 1919. In 1927, he was made professor of physics.
He is noted for his early developments of and work with the mass spectrograph (invented by Francis W. Aston). In 1935, he was able to show that uranium did not consist solely of the isotope uranium–238, for seven out of every thousand uranium atoms were in fact uranium–235. It was this isotope, 235U, that was later predicted by Niels Bohr to be capable of sustaining a chain reaction that could release large amounts of atomic fission energy.
Scientists.
Academic.
2011.
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Dempster, Arthur Jeffrey — ▪ American physicist born Aug. 14, 1886, Toronto, Ont., Can. died March 11, 1950, Stuart, Fla., U.S. American physicist who built the first mass spectrometer, a device used to separate and measure the quantities of different charged… … Universalium
Arthur Jeffrey Dempster — Infobox Scientist name = Arthur Jeffrey Dempster image width = caption = birth date = August 14, 1886 birth place = Toronto, Canada death date = 1950 death place = Stuart, Florida residence = citizenship = nationality = Canadian American… … Wikipedia
Arthur Jeffrey Dempster — A. J. Dempster Arthur Jeffrey Dempster (* 14. August 1886 in Toronto, Ontario; † 11. März 1950 in Stuart, Florida) war ein kanadisch US amerikanischer Physiker … Deutsch Wikipedia
Dempster-Shafer-Theorie — Die Evidenztheorie von Dempster und Shafer ist eine mathematische Theorie aus dem Gebiet der Wahrscheinlichkeitstheorie. Sie wird benutzt, um Informationen unterschiedlicher Quellen zu einer Gesamtaussage zusammenzusetzen, wobei die… … Deutsch Wikipedia
Dempster — can refer to: Maple Leaf Foods Dempster Brand Bread Dempster Street, a major east west artery north of Chicago, Illinois, part of which is part of U.S. Route 14 in Illinois Dempster (CTA), stations on the Chicago Transit Authority s L system, all … Wikipedia
Dempster — ist der Familienname folgender Personen: Arthur Jeffrey Dempster (1886–1950), kanadisch US amerikanischer Physiker Arthur P. Dempster, kanadisch US amerikanischer Statistiker und Universitätsprofessor Barry Dempster (* 1952), kanadischer Dichter… … Deutsch Wikipedia
Arthur Dempster — may refer to:*Arthur Jeffrey Dempster (1886 1950), physicist at the University of Chicago and Manhattan Project participant *Arthur P. Dempster, mathematician and statistician at Harvard University … Wikipedia
Dempster — [ dempstə], Arthur Jeffrey, kanadischer Physiker, * Toronto 14. 8. 1886, ✝ Stuart (Fla.) 11. 3. 1950; 1927 50 Professor für Experimentalphysik an der Universität Chicago. Dempster konstruierte den ersten Massenspektrographen mit… … Universal-Lexikon
Dempster — /demp steuhr, dem /, n. Arthur Jeffrey, 1886 1950, U.S. physicist. * * * … Universalium
Демпстер, Артур Джеффри — В Википедии есть статьи о других людях с такой фамилией, см. Демпстер. Артур Джеффри Демпстер англ. Arthur Jeffrey Dempster … Википедия
