Columbia Encyclopedia

Search results

333 results found

flight

(Encyclopedia)CE5 Aircraft motions and control surfaces: Yaw, or motion to the left or right, is controlled by the rudder. Pitch, or climbing or dropping, is controlled by the elevators, which move in the same d...

interference

(Encyclopedia)CE5 Constructive interference: Two crests or two troughs meet and combine (A, B, C). Destructive interference: A crest and a trough meet and cancel each other (D, E, F). interference, in physics, ...

science

(Encyclopedia)science [Lat. scientia=knowledge]. For many the term science refers to the organized body of knowledge concerning the physical world, both animate and inanimate, but a proper definition would also hav...

Presbyterianism

(Encyclopedia)Presbyterianism, form of Christian church organization based on administration by a hierarchy of courts composed of clerical and lay presbyters. Holding a position between episcopacy (government by bi...

air forces

(Encyclopedia)air forces, those portions of a nation's military organization employing heavier-than-air aircraft for reconnaissance, support of ground troops, aerial combat, and bombing of enemy lines of communicat...

Mary Queen of Scots

(Encyclopedia)Mary Queen of Scots (Mary Stuart), 1542–87, only child of James V of Scotland and Mary of Guise. Through her grandmother Margaret Tudor, Mary had the strongest claim to the throne of England after t...

espionage

(Encyclopedia)espionage ĕsˈpēənäzhˌ [key], the act of obtaining information clandestinely. The term applies particularly to the act of collecting military, industrial, and political data about one nation for ...

Bahamas, the

(Encyclopedia)CE5 Bahamas, the bəhäˈməz [key], officially Commonwealth of the Bahamas, independent nation (2020 ...

Goethe, Johann Wolfgang von

(Encyclopedia)Goethe, Johann Wolfgang von yōˈhän vôlfˈgäng fən göˈtə [key], 1749–1832, German poet, dramatist, novelist, and scientist, b. Frankfurt. One of the great masters of world literature, his ge...

Nixon, Richard Milhous

(Encyclopedia)Nixon, Richard Milhous, 1913–94, 37th President of the United States (1969–74), b. Yorba Linda, Calif. Soon after his reelection Nixon's popularity plummeted as the growing revelations of the Wa...