Columbia Encyclopedia

(Encyclopedia) Siddons, Sarah Kemble, 1755–1831, English actress. The most distinguished of the famous Kemble family, she had early theatrical experience in her father's traveling company, and at 18 she married Wi...

(Encyclopedia) resolving power: see telescope.

(Encyclopedia) power brake: see brake.

(Encyclopedia) power, in physics, time rate of doing work or of producing or expending energy. The unit of power based on the English units of measurement is the horsepower, devised for describing mechanical power b...

(Encyclopedia) balance of power, system of international relations in which nations seek to maintain an approximate equilibrium of power among many rivals, thus preventing the preponderance of any one state. Crucial...

(Encyclopedia) Biggs, E. Power (Edward George Power Biggs), 1906–77, Anglo-American organist. Biggs studied at the Royal Academy of Music, London. He emigrated to the United States in 1930. Through many recitals, ...

(Encyclopedia) Sheffield, industrial city (1990 pop. 10,380), Colbert co., NW Ala., on the Tennessee River near Muscle Shoals, in an iron and coal area; inc. 1885. Its varied manufactures include aluminum products, ...

(Encyclopedia) power, in mathematics: see exponent. ...

(Encyclopedia) Nine-Power Treaty: see naval conferences. ...

(Encyclopedia) Five-Power Treaty: see naval conferences. ...