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Drude, Paul Karl Ludwig

(Encyclopedia)Drude, Paul Karl Ludwig poul kärl lo͝otˈvĭkh dro͞oˈdə [key], 1863–1906, German physicist. Drude first experimented with the physical determinants of optical constants, measuring the optical c...

Pastor, Ludwig, Freiherr von

(Encyclopedia)Pastor, Ludwig, Freiherr von lo͞otˈvĭkh frīˈhĕr fən päsˈtôr [key], 1854–1928, German historian. The author of the monumental and authoritative History of the Popes from the Close of the Mi...

Leichhardt, Friedrich Wilhelm Ludwig

(Encyclopedia)Leichhardt, Friedrich Wilhelm Ludwig frēˈdrĭkh vĭlˈhĕlm lo͞odˈvĭkh līkhˈhärt [key], 1813–1848?, Prussian explorer of Australia. He led (1844–45) an expedition from Moreton Bay to Port ...

Ludwig, Carl Friedrich Wilhelm

(Encyclopedia)Ludwig, Carl Friedrich Wilhelm kärl frēˈdrĭkh vĭlˈhĕlm lo͞otˈvĭkh [key], 1816–95, German physiologist. He became world famous as professor (from 1865) and head of the physiological institu...

Wittgenstein, Ludwig Josef Johann

(Encyclopedia)Wittgenstein, Ludwig Josef Johann loŏtˈvĭkh yōˈzĕf yōˈhän vĭtˈgənshtīn [key], 1889–1951, Austrian philosopher, b. Vienna. The second phase of Wittgenstein's philosophy commenced with ...

York von Wartenburg, Ludwig, Graf

(Encyclopedia)York von Wartenburg, Ludwig, Graf: see Yorck von Wartenburg, Ludwig, Graf. ...

Helmholtz, Hermann Ludwig Ferdinand von

(Encyclopedia)Helmholtz, Hermann Ludwig Ferdinand von hĕrˈmän lo͞otˈvĭkh fĕrˈdēnänt fən hĕlmˈhôlts [key], 1821–94, German scientist. Although known especially as a physicist and biologist, he was al...

García Pérez, Alan Gabriel Ludwig

(Encyclopedia)García Pérez, Alan Gabriel Ludwig, 1949–2019, Peruvian political leader, president of Peru (1985–90, 2006–11). A lawyer and member of APRA, García was a charismatic speaker who rose rapidly i...

Mies van der Rohe, Ludwig

(Encyclopedia)Mies van der Rohe, Ludwig lo͞otˈvĭkh mēˈĕs vän dĕr rōˈə [key], 1886–1969, German-American architect. A pioneer of modern architecture and one of its most influential figures, he is famous...

Yorck von Wartenburg, Ludwig, Graf

(Encyclopedia)Yorck von Wartenburg or York von Wartenburg, Ludwig, Graf both: lo͝otˈvĭkh gräf yôrk fən värˈtənbo͝orkh [key], 1759–1830, Prussian army officer. He commanded the Prussian auxiliary corps t...