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Sitter, Willem de
(Encyclopedia)Sitter, Willem de vĭlˈəm də sĭtˈər [key], 1872–1934, Dutch astronomer and mathematician. He was professor from 1908 at the Univ. of Leiden and in 1919 became director of its observatory. His ...Ulm
(Encyclopedia)Ulm o͝olm [key], city (1994 pop. 114,839), Baden-Württemberg, S Germany, on the Danube (Donau) River. It is an active river port, rail junction, and industrial center. Manufactures include motor veh...Einstein Observatory
(Encyclopedia)Einstein Observatory: see X-ray astronomy. ...Levi-Civita, Tullio
(Encyclopedia)Levi-Civita, Tullio to͞olˈlyō lāˈvē-chēˈvētä [key], 1873–1942, Italian mathematician. He taught at the universities of Padua (1898–1919) and Rome (1919–38) and was noted for his resear...Sacks, Oliver Wolf
(Encyclopedia)Sacks, Oliver Wolf, 1933–2015, British neurologist and author, b. London, educated at Queen's College, Oxford. In 1960 he moved to the United States, where he continued his medical training. He bega...Bose-Einstein condensate
(Encyclopedia)Bose-Einstein condensate: see condensate. ...Es
(Encyclopedia)Es, symbol for the element einsteinium. ...boson
(Encyclopedia)boson: see elementary particles; Bose-Einstein statistics. ...Albert I, Holy Roman Emperor
(Encyclopedia)Albert I, c.1250–1308, Holy Roman Emperor (1298–1308), son of Rudolf I. Albert was invested with Austria and Styria in 1282 by his father, who also hoped to secure the succession as king of the Ge...Albert Nyanza
(Encyclopedia)Albert Nyanza, E Africa: see Albert, Lake. ...Browse by Subject
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