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Hahn, Otto

(Encyclopedia)Hahn, Otto ôˈtō hän [key], 1879–1968, German chemist and physicist. His important contributions in the field of radioactivity include the discovery of several radioactive substances, the develop...

Caprivi, Leo, Graf von

(Encyclopedia)Caprivi, Leo, Graf von lāˈō gräf fən käprēˈvē [key], 1831–99, German chancellor, whose full name was Georg Leo, Graf von Caprivi de Caprara de Montecuculi. A former army officer and head of...

Otto the Great

(Encyclopedia)Otto the Great: see Otto I, Holy Roman emperor. ...

Bauer, Otto

(Encyclopedia)Bauer, Otto bouˈər [key], 1882–1938, Austrian politician. His Die Nationalitätenfrage und die Sozialdemokratie (1907) advocated creating nation-states to solve the Austro-Hungarian nationalities ...

Otto, Frei Paul

(Encyclopedia)Otto, Frei Paul ôˈtō [key], 1925–2015, German architect. Most notable for his tensile and pneumatic structures, Otto was among the first major architects to experiment with lightweight design. H...

Windthorst, Ludwig

(Encyclopedia)Windthorst, Ludwig lo͝otˈvĭkh vĭntˈhôrst [key], 1812–91, German political leader. As a founder and head of the Catholic Center party, he became the Reichstag's foremost opponent of Chancellor ...

Otto, Nikolaus August

(Encyclopedia)Otto, Nikolaus August nēˈkōlous ouˈgo͝ost ôˈtō [key], 1832–91, German engineer. He was coinventor (1867) of an internal-combustion engine, and he devised (1876) the four-stroke Otto cycle, w...

Dix, Otto

(Encyclopedia)Dix, Otto, 1891–1969, German painter and draftsman. Dix fought in World War I and returned to Düsseldorf haunted by the horrors he had witnessed. In 1924 he published War, a series of 50 etchings, ...

Ems dispatch

(Encyclopedia)Ems dispatch, 1870, communication between King William of Prussia (later German Emperor William I) and his premier, Otto von Bismarck. In June, 1870, the throne of Spain was offered to Prince Leopold ...

Wallach, Otto

(Encyclopedia)Wallach, Otto, 1847–1931, German chemist, Ph.D. Univ. of Göttingen, 1869. Wallach was a professor at the Univ. of Bonn from 1870 to 1889 and at the Univ. of Göttingen from 1889 to 1915. In 1910 he...