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Dreyer, Johan Ludwig Emil

(Encyclopedia)Dreyer, Johan Ludwig Emil yōˈhän lo͝otˈvĭkh āˈmēl [key], 1852–1926, Danish astronomer, b. Copenhagen, who worked in Great Britain. He was assistant astronomer at the earl of Rosse's observa...

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...

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 ...

Pencz, Georg

(Encyclopedia)Pencz, Georg gāˈôrkh pĕnts [key], c.1500–1550, German painter and engraver of the Nuremberg school. He probably studied with Dürer in Nuremberg. He was banished in 1525 but soon returned. Pencz...

York von Wartenburg, Ludwig, Graf

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

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...

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...

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...