Columbia Encyclopedia
Search results
196 results found
Farnsworth, Philo Taylor
(Encyclopedia)Farnsworth, Philo Taylor, 1906–71, American inventor, b. Beaver, Utah, grad. Brigham Young Univ., 1925. He demonstrated (1927) a working model of a television system. His “dissector tube” (calle...Moffat Tunnel
(Encyclopedia)Moffat Tunnel mŏfˈət [key], railroad tube, 24 ft (7.3 m) high, 18 ft (5.5 m) wide, and 6.4 mi (10.3 km) long, N central Colo., in the Continental Divide, NW of Denver. One of the country's longest ...gun
(Encyclopedia)gun, in general, any weapon that discharges shot, shells, or bullets by the explosion of gunpowder or some other explosive from a straight tube. See firearm; artillery; small arms. ...blowgun
(Encyclopedia)blowgun, hollow tube from which a dart or an arrow is blown by a person's breath. The arrow was usually tipped with a poison, such as curare, which would stun or kill the struck prey. Blowguns were wi...pressure
(Encyclopedia)pressure, in mechanics, ratio of the force acting on a surface to the area of the surface; it is thus distinct from the total force acting on a surface. A force can be applied to and sustained by a si...alphorn
(Encyclopedia)alphorn or alpenhorn [Ger.,=Alps horn], wooden horn from 3 ft to 12 ft (91 cm–3.7 m) long, sometimes curved slightly, with conical bore and a cup-shaped mouthpiece. It produces only the natural harm...Fleming, Sir John Ambrose
(Encyclopedia)Fleming, Sir John Ambrose, 1849–1945, English electrical engineer. He was a leader in the development of electric lighting, the telephone, and wireless telegraphy in England and the inventor of a th...boiler
(Encyclopedia)boiler, device for generating steam. It consists of two principal parts: the furnace, which provides heat, usually by burning a fuel, and the boiler proper, a device in which the heat changes water in...siphon
(Encyclopedia)siphon sīˈfən, –fŏn [key], tube or other enclosed conduit through which a liquid is lifted over an elevation and then emptied at a lower level. The movement of the liquid is driven primarily by ...Eustachi, Bartolomeo
(Encyclopedia)Eustachi, Bartolomeo bärˌtōlōmĕˈō āˌo͞ostäˈkē [key], d. 1574, Italian anatomist. He lived in Rome from 1549 and taught at the Collegia della Sapienza (later the Univ. of Rome). He describ...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 +-
