light focusing
121Refractive index — Refraction of light at the interface between two media. In optics the refractive index or index of refraction of a substance or medium is a measure of the speed of light in that medium. It is expressed as a ratio of the speed of light in vacuum… …
122Epicureanism — is a system of philosophy based upon the teachings of Epicurus ( c . 341 ndash; c . 270 BC), founded around 307 BC. Epicurus was an atomic materialist, following in the steps of Democritus. His materialism led him to a general attack on… …
123Color television — Title card for NBC, promoting their broadcast in RCA color . Color television is part of the history of television, the technology of television and practices associated with television s transmission of moving images in color video. In its most… …
124Street photography — is a type of documentary photography that features subjects in candid situations within public places such as streets, parks, beaches, malls, political conventions, and other settings. Overview Street photography uses the techniques of straight… …
125Pentax K1000 — The Pentax K1000 (originally marked the Asahi Pentax K1000) is an interchangeable lens, 35 mm film, single lens reflex (SLR) camera. It was manufactured by Asahi Optical Co., Ltd., (PENTAX Corporation since 2002) from 1976 to 1997, originally in… …
126Chazz Princeton — Infobox animanga character name = Chazz Princeton series = Yu Gi Oh! GX caption = Chazz Princeton first = Anime: Yu Gi Oh! GX Episode 1 Manga: Yu Gi Oh! GX Chapter 1 last = creator = voiced by = Taiki Matsuno (Japanese) Anthony Salerno (English)… …
127Valéry Grancher — [ [http://fr.wikipedia.org/wiki/Valery Grancher french wikipedia article ] ] french wikipedia articleValéry Grancher (born 1967 April 22 in Toulon, Var, France) is a French Internet based artist, performer, theorist, curator and lecturer.… …
128Stage lighting instrument — Stage lighting instruments are used in stage lighting to illuminate theatrical productions, rock concerts and other performances taking place in live performance venues. They are also used to light television studios and sound stages.Terminology… …
