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perfluoroalkyl and polyfluoroalkyl substances

(Encyclopedia)perfluoroalkyl and polyfluoroalkyl substances (PFAS), a group of several thousand synthetic organic chemical compounds made up of a chain of carbon atoms bonded to fluorine atoms. PFAS, which resist w...

rock carvings and paintings

(Encyclopedia)rock carvings and paintings, designs inscribed on rock surfaces and huge stone monuments in many parts of the world by prehistoric or preindustrial peoples. They have been found on every continent and...

Romanesque architecture and art

(Encyclopedia)Romanesque architecture and art, the artistic style that prevailed throughout Europe from the 10th to the mid-12th cent., although it persisted until considerably later in certain areas. The term Roma...

Turks and Caicos Islands

(Encyclopedia)Turks and Caicos Islands kīˈkōs [key], dependency of Great Britain (2015 est. pop. 34,000), 166 sq mi (430 sq km), West Indies. There are more than 30 cays and islands, of which eight are inhabited...

turn and bank indicator

(Encyclopedia)turn and bank indicator, aircraft instrument containing one indicator to show turning, or rotation about the vertical axis, and another to show banking, or rotation about the longitudinal axis. The tw...

Bel and the Dragon

(Encyclopedia)Bel and the Dragon, customary name for chapter 14 of the Book of Daniel, a passage included in the Septuagint and the Apocrypha. It was written possibly in the 1st cent. b.c. as a response to Gentile ...

Washington and Lee University

(Encyclopedia)Washington and Lee University, at Lexington, Va.; coeducational; founded and opened 1749 as Augusta Academy. It was called Liberty Hall in 1776; became Liberty Hall Academy (a college) in 1782, Washin...

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