visual sharpness
81Damascus steel — For Damascus Twist barrels, see Skelp. For the album of the same name, see Damascus Steel (album). Close up of a 16th century Iranian crucible forged Damascus steel sword Damascus steel was a term used by several Western cultures from the… …
82SECAM — SECAM, also written SÉCAM (Séquentiel couleur à mémoire,[1] French for Sequential Color with Memory ), is an analog color television system first used in France. A team led by Henri de France working at Compagnie Française de Télévision (later… …
83Video — For films or movies, see Film. For other uses, see Video (disambiguation). For the use of video in Wikipedia articles, see Wikipedia:Creation and usage of media files. Video is the technology of electronically capturing, recording, processing,… …
84Super 8 mm film — Super 8 mm film, also simply called Super 8, is a motion picture film format released in 1965 by Eastman Kodak as an improvement of the older 8 mm home movie format, and the Cine 8 format.The film is 8 mm wide, exactly the same as the older… …
85Common Kingfisher — Subspecies A. a. bengalensis in central India. Conservation status …
86Reflecting telescope — 24 inch convertible Newtonian/Cassegrain reflecting telescope on display at the Franklin Institute. A reflecting telescope (also called a reflector) is an optical telescope which uses a single or combination of curved mirrors that reflect light… …
87Newtonian telescope — The Newtonian telescope is a type of reflecting telescope invented by the British scientist Sir Isaac Newton (1642–1727), using a concave primary mirror and a flat diagonal secondary mirror. Newton’s first reflecting telescope was completed in… …
88Russian architecture — follows a tradition whose roots were established in the Eastern Slavic state of Kievan Rus . After the fall of Kiev, Russian architectural history continued in the principalities of Vladimir Suzdal, and Novgorod, and the succeeding states of… …
89405-line television system — The 405 line monochrome analogue television broadcasting system was the first fully electronic television system to be used in regular broadcasting. It was introduced with the BBC Television Service in 1936, suspended for the duration of World… …
90Lateral inhibition — In neurobiology, lateral inhibition is the capacity of an excited neuron to reduce the activity of its neighbors. ensory inhibitionGeorg von Békésy, in his book Sensory Inhibition , [cite book | title = Sensory Inhibition | author = Georg Von… …
