Columbia Encyclopedia

(Encyclopedia) Presidents of the United States

(Encyclopedia)  CE5 Bohr-Rutherford atom CE5 Probability distribution of the electron in the hydrogen atom: A. Ground state B. Highly excited state atom [Gr.,=uncuttable (indivisible)], basic unit of matte...

(Encyclopedia) Conservative party, British political party, formally the Conservative and Unionist party and a continuation of the historic Tory party. In 1965, Edward Heath became the first leader chosen thro...

(Encyclopedia) American architecture, the architecture produced in the geographical area that now constitutes the United States. Wright, generally acknowledged as one of the greatest architects of the 20th cent., ...

(Encyclopedia)  CE5 Jamaica jəmāˈkə [key], independent state within the Commonwealth (2015 est. pop. 2,872,000), 4,232 sq mi (10,962 sq km), coextensive with the island of Jamaica, West Indies, S of Cuba and W...

(Encyclopedia) chemistry, branch of science concerned with the properties, composition, and structure of substances and the changes they undergo when they combine or react under specified conditions. Organic chemi...

(Encyclopedia)  CE5 CE5 Byzantine Empire (c.1000) Byzantine Empire, successor state to the Roman Empire (see under Rome), also called Eastern Empire and East Roman Empire. It was named after Byzantium, which Emp...

(Encyclopedia)  CE5 Electrical and radio symbols electricity, class of phenomena arising from the existence of charge. The basic unit of charge is that on the proton or electron—the proton's charge is designate...

(Encyclopedia)  CE5 Israel ĭzˈrēəl [key], officially State of Israel, republic (2015 est. pop. 8,065,000, including Israelis in occupied Arab territories), 7,992 sq mi (20,700 sq km), SW Asia, on the Mediterra...

(Encyclopedia)  CE5 Arctic, the northernmost area of the earth, centered on the North Pole. The arctic regions are not coextensive with the area enclosed by the Arctic Circle (lat. 66°30′N) but are usually defi...