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, ...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 ...electricity
(Encyclopedia) CE5 Electrical and radio symbols electricity, class of phenomena arising from the existence of charge. The basic unit of charge is that on the proton or electron—the proton's charge is designate...Condillac, Étienne Bonnot de
(Encyclopedia)Condillac, Étienne Bonnot de ātyĕnˈ bônōˈ də kôNdēyäkˈ [key], 1715–80, French philosopher who developed the theory of sensationalism (i.e., that all knowledge comes from the senses and t...Toulouse-Lautrec, Henri de
(Encyclopedia)Toulouse-Lautrec, Henri de äNrēˈ də to͞olo͞ozˈ lōtrĕkˈ [key], 1864–1901, French painter and lithographer, b. Albi. Son of a wealthy nobleman, Lautrec fell and broke both legs when he was a...Tropic of Capricorn
(Encyclopedia)Tropic of Capricorn, parallel of latitude at 23°30′ south of the equator; it is the southern boundary of the tropics. This parallel marks the farthest point south at which the sun can be seen direc...automobile
(Encyclopedia) CE5 Automobile chassis CE5 Two views of a six-cylinder automobile engine automobile, self-propelled vehicle used for travel on land. The term is commonly applied to a four-wheeled vehicle desig...alternating current
(Encyclopedia)alternating current, abbr. AC, a flow of electric charge that undergoes periodic reverses in direction. In North America ordinary household current alternates at a frequency of 60 times per second. Se...heating
(Encyclopedia) CE5 Typical warm-air heating system heating, means of making a building comfortably warm relative to a colder outside temperature. Old, primitive methods of heating a building or a room within it ...Appleton
(Encyclopedia)Appleton, city (2020 pop. 75,644), seat of Outagamie co., E Wis., on the Fox River near its exit from the northern end of Lake Winnebago, in a dairying and stockraising region; inc. 1857. ...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 +-
