Columbia Encyclopedia

(Encyclopedia) Clausius, Rudolf Julius Emanuel ro͞oˈdôlf yo͞oˈlyo͝os āmäˈno͞oĕl klouˈzēo͝os [key], 1822–88, German mathematical physicist. A pioneer in the science of thermodynamics, he introduced th...

(Encyclopedia) Chaco, Chaco Austral, Chaco Boreal, Chaco Central, and Chaco War: see Gran Chaco. ...

(Encyclopedia) silt, predominantly quartz mineral particles that are between sand size and clay size, i.e., between 1⁄16 and 1⁄256 mm (1⁄406 –1⁄6502 in.) in diameter. Silt, like clay and sand, is a product...

(Encyclopedia) guru go͞oˈro͞o, go͝orˈo͞o [key], in Hinduism and Buddhism, spiritual teacher. The guru gives initiation into spiritual practice and instructs disciples, often maintaining a close relationship wi...

(Encyclopedia) Castelo Branco, Humberto o͞ombĕrˈto͝o kəshtĕˈlo͝o brängˈko͝o [key], 1900–1967, president of Brazil (1964–67). An army officer, he served as chief of staff of the Brazilian army before p...

(Encyclopedia) Ugrian yo͞oˈgrĭk, o͞oˈ– [key], subgroup of the Finno-Ugric group of languages, which is, in turn, a subdivision of the Uralic subfamily of the Ural-Altaic family of languages. See Finno-Ugric l...

(Encyclopedia) Rio Branco, José Maria da Silva Paranhos, barão do zho͝ozĕˈ mərēˈə də sēlˈvə pəräˈnyo͝os bərouNˈ do͝o rēˈo͝o brängˈko͝o [key], 1845–1912, Brazilian statesman and diplomat. ...

(Encyclopedia) Angra do Heroísmo ängˈgrə do͝o əro͝oēzhˈmo͝o [key], town, capital of Angra do Heroísmo dist., Portugal, in the Azores, on Terceira island. It is a port ...

(Encyclopedia) Patchen, Kenneth, 1911–72, American poet and novelist, b. Niles, Ohio. His writings, characterized by complete freedom of form, embrace genres as diverse as satire, fantasy, and metaphysical love po...

(Encyclopedia) Drake, Francis Marion, 1830–1903, Union army officer in the Civil War, railroad president, and governor of Iowa (1896–98), b. Rushville, Ill. He helped defend St. Joseph, Mo., against Confederate ...