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51pre-Columbian civilizations — Introduction the aboriginal American Indian (Mesoamerican Indian) cultures that evolved in Meso America (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th …
52Operation Sandblast — Part of Cold War (1953–1962) …
53Convair B-36 — B 36 redirects here. For other meanings, see B36 (disambiguation). B 36 Peacemaker The B 36D used both piston and jet engines …
54Augmentative and alternative communication — An AAC user indicates a series of numbers on an eye gaze communication board in order to convey a word. Augmentative an …
55History of photography — The first permanent photograph was an image produced in 1826[1] by the French inventor Joseph Nicéphore Niépce.[2] …
56Depth of field — The area within the depth of field appears sharp, while the areas in front of and beyond the depth of field appear blurry …
57Veganism — Veganism …
58Infrared photography — Top: tree photographed in the near infrared range. Bottom: same tree in the visible part of the spectrum …
59Adolfo Farsari — (11 February 1841 ndash; 7 February 1898) was an Italian photographer based in Yokohama, Japan. Following a brief military career, including service in the American Civil War, he became a successful entrepreneur and commercial photographer. His… …
60Art, Antiques, and Collections — ▪ 2003 Introduction In 2002 major exhibitions such as Documenta 11 reflected the diverse nature of contemporary art: artists from a variety of cultures received widespread recognition for work ranging from installation to video to painting …
