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Woods, Granville Taylor

(Encyclopedia)Woods, Granville Taylor,, 1856–1910, African-American inventor, b. Columbus, Ohio. He worked in a railroad shop as a youth, becoming a machinist and blacksmith. He subsequently worked on trains, fir...

directing

(Encyclopedia)directing, the art of leading dramatic performances on the stage or in films. The modern theatrical director is in complete charge of all the artistic aspects of a dramatic presentation. It is the dir...

sodium

(Encyclopedia)sodium, a metallic chemical element; symbol Na [Lat. natrium]; at. no. 11; at. wt. 22.98977; m.p. 97.81℃; b.p. 892.9℃; sp. gr. 0.971 at 20℃; valence +1. Sodium is a soft, silver-white metal. Ext...

electrode

(Encyclopedia)electrode, terminal through which electric current passes between metallic and nonmetallic parts of an electric circuit. In most familiar circuits current is carried by metallic conductors, but in som...

Plummer, Christopher

(Encyclopedia) Plummer, Christopher (Arthur Christopher Orme), 1929-2021, Canadian-American actor, b. Toronto, Canada. Raised by his mother, Plummer first aspire...

ultraviolet radiation

(Encyclopedia)ultraviolet radiation, invisible electromagnetic radiation between visible violet light and X rays; it ranges in wavelength from about 400 to 4 nanometers and in frequency from about 1015 to 1017 hert...

cadence

(Encyclopedia)cadence, in music, the ending of a phrase or composition. In singing the voice may be raised or lowered, or the singer may execute elaborate variations within the key. In instrumental music, with deve...

Brecht, Bertolt

(Encyclopedia)Brecht, Bertolt bĕrˈtôlt brĕkht [key], 1898–1956, German dramatist and poet, b. Eugen Berthold Friedrich Brecht. His brilliant wit, his outspoken Marxism, and his revolutionary experiments in th...

Sprague, Frank Julian

(Encyclopedia)Sprague, Frank Julian sprāg [key], 1857–1934, American electrical engineer, b. Milford, Conn., grad. Annapolis, 1878. He was an assistant to Thomas Edison in 1883 and independently created a superi...

Farmer, Moses Gerrish

(Encyclopedia)Farmer, Moses Gerrish, 1820–93, American inventor, b. Boscawen, N.H. He helped build and maintain some of the pioneer telegraph lines of Massachusetts and experimented in multiple telegraphy. He exh...