(Encyclopedia) helicopter, type of aircraft in which lift is obtained by means of one or more power-driven horizontal propellers called rotors. When the rotor of a helicopter turns it produces…
(Encyclopedia) Abu Dhabi
Abu Dhabi
äˈb&oomacr; ᵺäˈbē, zä–,
dä–
[key], Arab. Abu Zabi, sheikhdom, c.26,000 sq mi (67,300 sq km), part of
the federation of seven…
(Encyclopedia) snorkel, tube through which a submarine or diver can draw air while underwater. When in use, the top of the snorkel tube extends above the water surface into the air. The first…
(Encyclopedia) Scarlatti, AlessandroScarlatti, Alessandroälĕs-sänˈdrō skärlätˈtē [key], 1660–1725, Italian composer. He may have studied with Carissimi in Rome, where his first opera was produced in…
(Encyclopedia) Falun GongFalun Gongfä-l&oomacr;n g&oomacr;ng [key], also known as Falun DafaFalun Gongdä-fä [key], movement promoting physical and spiritual well-being that became widespread…
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The earliest fossil animal embryos, dating from the Precambrian era, were found by American, Taiwanese, and Chinese scientists in phosphate deposits in China's Guizhou province. Some of…
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