Columbia Encyclopedia

Search results

500 results found

insulation

(Encyclopedia)insulation ĭnˌsəlāˈshən, ĭnˌsyo͝o– [key], use of materials or devices to inhibit or prevent the conduction of heat or of electricity. Common heat insulators are, fur, feathers, fiberglass, ...

entropy

(Encyclopedia)entropy ĕnˈtrəpē [key], quantity specifying the amount of disorder or randomness in a system bearing energy or information. Originally defined in thermodynamics in terms of heat and temperature, e...

radiator

(Encyclopedia)radiator, device used to heat an area surrounding it or to cool a fluid circulating within it. The familiar radiators of steam and hot water heating systems in buildings are misnamed, as they operate ...

Artesia

(Encyclopedia)Artesia ärtēˈzhə [key]. 1 City (2020 pop. 16,399), Los Angeles co., S Calif.; founded 1875, inc. 1959. Industries include dairying, printing, and the manufacture of ph...

Muhammad V, king of Morocco

(Encyclopedia)Muhammad V (Sidi Muhammad ibn Youssef), 1910–61, king of Morocco (1957–61). He succeeded his father, Moulay Youssef, as sultan in 1927. An ardent nationalist, he was deposed and exiled (1953) by t...

Overbury, Sir Thomas

(Encyclopedia)Overbury, Sir Thomas, 1581–1613, English author and courtier. He was a friend and adviser to Robert Carr, an Oxford acquaintance. The two quarreled violently when Overbury disapproved of Carr's marr...

Milošević, Slobodan

(Encyclopedia)Milošević, Slobodan slôbôˈdän mēlôˈshəvĭchˌ [key], 1941–2006, Yugoslav and Serbian political leader, president of Serbia (1989–97) and of Yugoslavia (1997–2000), b. Požarevac, Serbi...

lake, body of water

(Encyclopedia)lake, inland body of standing water occupying a hollow in the earth's surface. The study of lakes and other freshwater basins is known as limnology. Lakes are of particular importance since they act a...

diving, deep-sea

(Encyclopedia)diving, deep-sea, act of descending into deep water, generally with some form of breathing apparatus, and remaining there for an extended period. It is used in fishing for sponges, coral, and pearls; ...

Mather, John Cromwell

(Encyclopedia)Mather, John Cromwell, 1946–, American astrophysicist, b. Roanoke, Va., Ph.D. Univ. of California, Berkeley, 1974. He has been a researcher at NASA's Goddard Space Flight Center in Greenbelt, Md., s...