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Puerto Rico

(Encyclopedia)CE5 Puerto Rico rēˈkō [key], island (2015 est. pop. 3,674,000), 3,508 sq mi (9,086 sq km), West Indies, c.1,000 mi (1,610 km) SE of Miami, Fla. Officially known as the Commonwealth of Puerto Ric...

elementary particles

(Encyclopedia)CE5 elementary particles, the most basic physical constituents of the universe. The first subatomic particle to be discovered was the electron, identified in 1897 by J. J. Thomson. After the...

newspaper

(Encyclopedia)newspaper, publication issued periodically, usually daily or weekly, to convey information and opinion about current events. In England large newspaper-publishing empires were built up by Lords...

Athens, city, Greece

(Encyclopedia)Athens ăthˈĭnz [key], Gr. Athínai, city (2021 urban agglomeration pop. 3,153,000), capital of Greece, E central Greece, on the plain of Attica, between the Kifisós an...

London, city, England

(Encyclopedia)London, capital of Great Britain, SE England, on both sides of the Thames River. Greater London (1991 pop. 6,378,600), c.620 sq mi (1,610 sq km), consists of the Corporation of the City of London (199...

Renaissance art and architecture

(Encyclopedia)Renaissance art and architecture, works of art and structures produced in Europe during the Renaissance. In England the Renaissance flowered in the middle of the 16th cent. The Elizabethan style an...

history

(Encyclopedia)history, in its broadest sense, is the story of humanity's past. It also refers to the recording of that past. The diverse sources of history include books, newspapers, printed documents, personal pap...

physics

(Encyclopedia)physics, branch of science traditionally defined as the study of matter, energy, and the relation between them; it was called natural philosophy until the late 19th cent. and is still known by this na...

Denmark

(Encyclopedia)CE5 Denmark dĕnˈmärk [key], Dan. Danmark, officially Kingdom of Denmark, kingdom (2015 est. pop. 5,689,000), 16,629 sq mi (43,069 sq km), N Europe. It borders on Germany in the south, the North ...

communism

(Encyclopedia)communism, fundamentally, a system of social organization in which property (especially real property and the means of production) is held in common. Thus, the ejido system of the indigenous people of...