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percussion instrument

(Encyclopedia)percussion instrument, any instrument that produces musical sound when its surface is struck with an implement (such as a mallet, stick, or disk) or with the hand. Perhaps the most universally familia...

Smothers Brothers

(Encyclopedia) Smothers Brothers, American comedians, musicians, and TV hosts. Tom (b. February 2, 1937,as Thomas Smothers) and Dick (b. November 20, 1939, as ...

iron lung

(Encyclopedia)iron lung, device used to maintain artificial respiration over an extended period of time. Before the successful vaccination program against poliomyelitis, it was used mostly in treatment of that dise...

modulation, in communications

(Encyclopedia)CE5 Modulation modulation, in communications, process in which some characteristic of a wave (the carrier wave) is made to vary in accordance with an information-bearing signal wave (the modulatin...

Hermes, in Greek religion and mythology

(Encyclopedia)Hermes, in Greek religion and mythology, son of Zeus and Maia. His functions were many, but he was primarily the messenger of the gods, particularly of Zeus, and conductor of souls to Hades. He was go...

laser printer

(Encyclopedia)laser printer, a computer printer that produces high-resolution output by means of a process that is similar to photocopying. In place of reflected light from an image (as is used in xerography), a la...

Newbolt, Sir Henry John

(Encyclopedia)Newbolt, Sir Henry John, 1862–1938, English poet and historian. He is best remembered for his vigorous and imperialistic poems of the sea, collections of which include Admirals All (1897), The Saili...

Mass, in Christianity

(Encyclopedia)Mass, religious service of the Roman Catholic Church, which has as its central act the performance of the sacrament of the Eucharist. It is based on the ancient Latin liturgy of the city of Rome, now ...

barograph

(Encyclopedia)barograph, instrument used to make a continuous recording of atmospheric pressure. The pressure-sensitive element, a partially evacuated metal cylinder, is linked to a pen arm in such a way that the v...

Olatunji, Babatunde

(Encyclopedia)Olatunji, Babatunde, 1927–2003, Nigerian drummer, b. Ajido. Educated in the United States, he graduated from Atlanta's Morehouse College in 1954 and studied at New York Univ. A Yoruba, steeped in tr...