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Kuiper, Gerard Peter

(Encyclopedia)Kuiper, Gerard Peter or Gerrit Pieter gĕrˈĭt pēˈtər kīˈpər [key], 1905–73, American astronomer, b. the Netherlands. Kuiper is considered to be the father of modern planetary science for his...

carbon dioxide

(Encyclopedia)carbon dioxide, chemical compound, CO2, a colorless, odorless, tasteless gas that is about one and one-half times as dense as air under ordinary conditions of temperature and pressure. It does not bur...

Hess, Victor Francis

(Encyclopedia)Hess, Victor Francis, 1883–1964, American physicist, b. Austria, Ph.D. Univ. of Graz, 1906. After teaching at the universities of Graz and Innsbruck, he came to the United States in 1938 and was lat...

Huaynaputina

(Encyclopedia)Huaynaputina, volcano, 15,912 ft (4,850 m) high, Moquegua region, S Peru, in the central Andes. A stratovolcano, it lies on the W rim of the Río Tambo canyon and has several ash cones within its crat...

Appia, Adolphe

(Encyclopedia)Appia, Adolphe ädôlfˈ äpˈpyä [key], 1862–1928, Swiss theorist of modern stage lighting and décor. In interpreting Wagner's ideas in scenic designs for his operas, Appia rejected painted scene...

Farquhar, George

(Encyclopedia)Farquhar, George färˈkər, –kwər [key], 1678–1707, Irish dramatist, b. Londonderry (now Derry), Ireland. After his short career as an actor ended when he severely wounded a fellow actor in a st...

Sharp, William

(Encyclopedia)Sharp, William, pseud. Fiona Macleod fēˈnə məkloudˈ, fēōˈnə [key], 1855–1905, Scottish poet and man of letters. Under his own name he wrote literary biographies; poems, including the volume...

shock wave

(Encyclopedia)shock wave, wave formed of a zone of extremely high pressure within a fluid, especially the atmosphere, that propagates through the fluid at a speed in excess of the speed of sound. A shock wave is ca...

theodolite

(Encyclopedia)theodolite thēŏdˈəlītˌ [key], calibrated optical instrument used to determine relative position in surveying, navigation, and meteorology. It is similar in construction to a surveyor's transit, ...

Osorno

(Encyclopedia)Osorno ōsōrˈnō [key], city (1990 est. pop. 117,400), Los Lagos region, S central Chile, in the heart of the lake district. Osorno is chiefly an agricultural processing and distribution center. Fou...