Columbia Encyclopedia

(Encyclopedia) digital radio, audio broadcasting in which an analog audio signal is converted into a digital signal before being transmitted; also known as digital audio broadcasting (DAB) and high-definition radio....

(Encyclopedia)  CE5 Bugula, a moss animal, representative of the phylum Ectoprocta Ectoprocta ĕkˌtəprŏkˈtə [key], phylum of sessile, colonial aquatic animals (commonly known as moss animals or oryonzoans). ...

(Encyclopedia) image, in optics, likeness or counterpart of an object produced when rays of light coming from that object are reflected from a mirror or are refracted by a lens. An image of an object is also formed ...

(Encyclopedia) Jackson, Michael Joseph, 1958–2009, American performer, b. Gary, Ind. Jackson was an extremely successful pop singer, superb dancer, and talented composer who often conveyed an androgynous image and...

(Encyclopedia) Jackson, Robert Houghwout houˈət [key], 1892–1954, associate justice of the U.S. Supreme Court (1941–54), b. Spring Creek, Pa. Despite the fact that he did not have a law degree, he was admitted...

(Encyclopedia) appeal, in law, hearing by a superior court to consider correcting or reversing the judgment of an inferior court, because of errors allegedly committed by the inferior court. The party appealing the ...

(Encyclopedia) Harlan, John Marshall, 1833–1911, American jurist, associate justice of the U.S. Supreme Court (1877–1911), b. Boyle co., Ky., grad. Centre College, 1850. Admitted to the bar in 1853, he served in...

(Encyclopedia) harmonica. 1 The simplest of the musical instruments employing free reeds, known also as the mouth organ or French harp. It was probably invented in 1829 by Friedrich Buschmann of Berlin, who called h...

(Encyclopedia) Abramoff scandal, in U.S. history, political corruption scandal resulting from criminal conduct on the part of lobbyist Jack Abramoff (1959–) and his associates. Abramoff was a Republican activist w...

(Encyclopedia) Sinclair, Upton (Upton Beall Sinclair), 1878–1968, American novelist and socialist activist, b. Baltimore, grad. College of the City of New York, 1897. He was one of the muckrakers, and a dedication...