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Boltzmann, Ludwig

(Encyclopedia)Boltzmann, Ludwig lo͝otˈvĭkh bôltsˈmän [key], 1844–1906, Austrian physicist, b. Vienna, educated at Univ. of Vienna. He began teaching (1869) at Graz Univ. In 1873 he became mathematics profes...

Stefan, Josef

(Encyclopedia)Stefan, Josef yōˈzĕf shtĕfˈän [key], 1835–93, Austrian physicist. At the Univ. of Vienna he became a professor of physics and later director of the Physical Institute. From his observations on...

Ludwig

(Encyclopedia)Ludwig. For German rulers thus named, use Louis.

statistical mechanics

(Encyclopedia)statistical mechanics, quantitative study of systems consisting of a large number of interacting elements, such as the atoms or molecules of a solid, liquid, or gas, or the individual quanta of light ...

Mond, Ludwig

(Encyclopedia)Mond, Ludwig, 1839–1909, chemist; father of Alfred Moritz Mond, 1st Baron Melchett. He was born in Germany and became a naturalized British subject. Mond experimented with alkalies and also develope...

Lewisohn, Ludwig

(Encyclopedia)Lewisohn, Ludwig lo͞oˈĭzōn [key], 1882–1955, American author, b. Berlin. After teaching German at Ohio State (1911–19), he was associate editor for the Nation (1920–24). His novels include D...

Ludwig, Christa

(Encyclopedia)Ludwig, Christa lo͞otˈvĭkh [key], 1928–, German mezzo-soprano, b. Berlin. The daughter of opera singers, she debuted (1946) as Prince Orlofsky in Die Fledermaus at the Frankfurt State Opera and ...

Ludwig, Emil

(Encyclopedia)Ludwig, Emil lo͞otˈvĭkh [key], 1881–1948, German biographer, originally named Emil Cohn. His vivid and dramatic (although sometimes unreliable) portraits of great men include Goethe (1920, tr. 1...

Ludwig, Otto

(Encyclopedia)Ludwig, Otto lo͞otˈvĭkh [key], 1813–65, German writer. He was one of Germany's first modern realists; although his plots were melodramatic, he sketched accurate and detailed backgrounds. After H...

Gumplowicz, Ludwig

(Encyclopedia)Gumplowicz, Ludwig lo͞otˈvĭkh go͝omˈplōvĭch [key], 1838–1909, Austrian sociologist, political scientist, and jurist. From 1897 to 1909 he was a professor at Graz. He held that social developm...