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Agua Azul
(Encyclopedia)Agua Azul, series of waterfalls and pools on the Xanil River in Chiapas state, S Mexico, SW of Palenque in the Cascadas de Agua Azul Natural Park. The waters of the Agua Azul are noted for their brill...quantum chromodynamics
(Encyclopedia)quantum chromodynamics (QCD), quantum field theory that describes the properties of the strong interactions between quarks and between protons and neutrons in the framework of quantum theory. Quarks p...Rockwell, Norman
(Encyclopedia)Rockwell, Norman, 1894–1978, American illustrator, b. New York City. One of America's favorite artists, Rockwell specialized in warm and humorous scenes of small-town American life, and from the lat...Leiter, Saul
(Encyclopedia)Leiter, Saul lītˈər [key], 1923–2013, American photographer, b. Pittsburgh. A painter in the early 1940s, Leiter switched to photography late in the decade. Along with Robert Frank and Diane Arbu...buoy
(Encyclopedia)buoy boi, bo͞oˈē [key], float anchored in navigable waters to mark channels and indicate dangers to navigation (isolated rocks, mine fields, cables, and the like). The shape, color, number, and mar...photochemistry
(Encyclopedia)photochemistry, study of chemical processes that are accompanied by or catalyzed by the emission or absorption of visible light or ultraviolet radiation. A molecule in its ground (unexcited) state can...Riley, Bridget
(Encyclopedia)Riley, Bridget, 1931–, English painter. Associated with the pop art movement, Riley covers large canvases with interlocking bands, undulating curves, scattered discs, or repeated squares or triangle...Ramón y Cajal, Santiago
(Encyclopedia)Ramón y Cajal, Santiago säntyäˈgō rämōnˈ ē kähälˈ [key], 1852–1934, Spanish histologist, widely considered the father of neuroscience. He was a university professor at Valencia (1881–8...Olitski, Jules
(Encyclopedia)Olitski, Jules ŏlĭtˈskē [key], 1922–2006, American painter, b. Russia as Jevel Demikovsky. While considered a color-field painter (see color-field painting), Olitski produced works that are free...Bennett, James Gordon, 1795–1872, American newspaper publisher
(Encyclopedia)Bennett, James Gordon, 1795–1872, American newspaper proprietor, b. Keith, Scotland. He came to America in 1819 and won a reputation as Washington correspondent of the New York Enquirer and later (1...Browse by Subject
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