(Encyclopedia) pigment, substance that imparts color to other materials. In paint, the pigment is a powdered substance which, when mixed in the liquid vehicle, imparts color to a painted surface. The…
—By Borgna BrunnerSedna Debuts, Rattling Poor Pluto Artist's rendition of the planetoid Sedna On March 15, 2004, astronomers confirmed the discovery of the most distant object ever identified in…
(Encyclopedia) corundumcorundumkərŭnˈdəm [key], mineral, aluminum oxide, Al2O3. The clear varieties are used as gems and the opaque as abrasive materials. Corundum occurs in crystals of the hexagonal…
What is a tsunami? The phenomenon we call tsunami is a series of large waves of extremely long wavelength and period usually generated by a violent, impulsive…
(Encyclopedia) color, effect produced on the eye and its associated nerves by light waves of different wavelength or frequency. Light transmitted from an object to the eye stimulates the different…
by Elizabeth Olson photos by Carol M. Highsmith The U.S. National Park Service was created on August 25, 1916, by President Woodrow Wilson. In 1872, Yellowstone National Park became the…
The Aesthetics of Black and White and ColorMovies and FilmFilm: Aesthetics of Black and White and Color FilmBlitz-Klieg: A Brief History of Black-and-White FilmA Condensed History of ColorThe…
(Encyclopedia) MankatoMankatomănkāˈtō [key], city (1990 pop. 31,477), seat of Blue Earth co., S Minn., at the confluence of the Blue Earth and Minnesota rivers; inc. 1865. It is a trade and…
(Encyclopedia) Bunyan, Paul, legendary American lumberjack. He was the hero of a series of “tall tales” popular through the timber country from Michigan westward. Bunyan was known for his fantastic…
