Columbia Encyclopedia
Search results
500 results found
motor, electric
(Encyclopedia) CE5 Motor: In the AC motor, current fed to the conducting loop of wire causes it to rotate in the magnetic field, thus turning the shaft on which the loop is mounted. In the DC motor, the direction...Vereeniging
(Encyclopedia)Vereeniging fərēˈnĭkhĭng [key] [Afrik.,=union], city, now part of the Enfuleni local municipality, Gauteng prov., NE South Africa, on the Vaal River. An industrial center, its chief products are ...Wollaston, William Hyde
(Encyclopedia)Wollaston, William Hyde, 1766–1828, English scientist, M.D. Cambridge, 1793. His wide-ranging scientific achievements include the discovery (1802) of the dark lines (Fraunhofer lines) in the solar s...Nelson, river, Canada
(Encyclopedia)Nelson, river, c.400 mi (640 km) long, issuing from the northeast end of Lake Winnipeg, central Man., Canada, and flowing NE to Hudson Bay at Port Nelson. With the Bow–South Saskatchewan–Saskatche...Rhine Canals
(Encyclopedia)Rhine Canals. Among the chief canals linking the Rhine with other river systems are the Rhine-Rhône Canal, 217 mi (349 km) long (built 1784–1833, now unimportant), connecting with the Rhône River ...Motion, Sir Andrew Peter
(Encyclopedia)Motion, Sir Andrew Peter, 1952–, English poet and biographer, poet laureate of England (1999–2009), grad. University College, Oxford (B.A., 1974; M.Litt., 1977). He writes poems that are both lyri...Navalny, Alexei Anatolyevich
(Encyclopedia)Navalny, Alexei Anatolyevich, 1976–, Russian lawyer and political activist. Navalny joined the Russian United Democratic party...Guy Blache, Alice
(Encyclopedia)Guy Blache or Guy-Blaché, Alice, 1873–1968, French-American filmmaker, b. Paris as Alice Guy. The first woman filmmaker, she directed, produced, wrote screenplays for, or supervised some 1,000 film...Democritus
(Encyclopedia)Democritus dĭmŏkˈrĭtəs [key], c.460–c.370 b.c., Greek philosopher of Abdera; pupil of Leucippus. His theory of the nature of the physical world was the most radical and scientific attempted up ...airfoil
(Encyclopedia)airfoil, surface designed to develop a desired force by reaction with a fluid, especially air, that is flowing across the surface. For example, the fixed wing surfaces of an airplane produce lift, whi...Browse by Subject
- Earth and the Environment +-
- History +-
- Literature and the Arts +-
- Medicine +-
- People +-
- Philosophy and Religion +-
-
Places
+-
- Africa
- Asia
- Australia and Oceania
- Britain, Ireland, France, and the Low Countries
- Commonwealth of Independent States and the Baltic Nations
- Germany, Scandinavia, and Central Europe
- Latin America and the Caribbean
- Oceans, Continents, and Polar Regions
- Spain, Portugal, Italy, Greece, and the Balkans
- United States, Canada, and Greenland
- Plants and Animals +-
- Science and Technology +-
- Social Sciences and the Law +-
- Sports and Everyday Life +-
