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Constitution of the United States

(Encyclopedia)CE5 Constitution of the United States, document embodying the fundamental principles upon which the American republic is conducted. Drawn up at the Constitutional Convention in Philadelphia in 1787...

digital-to-analog conversion

(Encyclopedia)digital-to-analog or D/A conversion, the process of changing discrete digital data into a continuously varying signal in relation to a standard or reference. There are two types of converters: electro...

analog-to-digital conversion

(Encyclopedia)analog-to-digital or A/D conversion, the process of changing continuously varying data, such as voltage, current, or shaft rotation, into discrete digital quantities that represent the magnitude of th...

Hall of Fame for Great Americans

(Encyclopedia)Hall of Fame for Great Americans, national shrine, on the campus of Bronx Community College of the City Univ. of New York, Bronx, New York City; est. 1900. The Hall of Fame, a 630-ft (192-m) colonnade...

North American Native art

(Encyclopedia)North American Native art, diverse traditional arts of Native North Americans. In recent years Native American arts have become commodities collected and marketed by nonindigenous Americans and Europe...

Habitat for Humanity

(Encyclopedia)Habitat for Humanity, nonprofit ecumenical Christian organization that enables low-income people to own affordable, livable housing. Headquartered in Americus, Ga., it was founded in 1976 by former bu...

Spanish-American War

(Encyclopedia)Spanish-American War, 1898, brief conflict between Spain and the United States arising out of Spanish policies in Cuba. It was, to a large degree, brought about by the efforts of U.S. expansionists. ...

Formulas for the Volumes of Some Common Solids (table)

(Encyclopedia)Formulas for the Volumes of Some Common Solids 1 Abbreviations: B = area of base; h = height; r = radius; l = length; w = width. ...

Baruch, book of the Septuagint and of the Apocrypha

(Encyclopedia)Baruch, early Jewish book included in the Septuagint, but not included in the Hebrew Bible and placed in the Apocrypha in the Authorized Version. It is named for a Jewish prince Baruch (fl. 600 b.c.),...

Central American Federation

(Encyclopedia)Central American Federation or Central American Union, political confederation (1825–38) of the republics of Central America—Costa Rica, Guatemala, Honduras, Nicaragua, and Salvador. United under ...