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phenakistoscope
The phenakistoscope (also spelled phenakistiscope or phenakitiscope) was an early animation device that used the Persistence of vision principle to create an illusion of motion. The Phenakistoscope is regarded as one of the first forms of moving media entertainment that paved the way for the future motion picture and film industry. 〔Prince, Stephen. "Through the Looking Glass: Philosophical Toys and Digital Visual Effects." Projections 4.2 (2010): 19-40. Web.〕
==Technology==
The phenakistoscope used a spinning disc attached vertically to a handle. Arrayed around the disc's center was a series of drawings showing phases of the animation, and cut through it was a series of equally spaced radial slits. The user would spin the disc and look through the moving slits at the disc's reflection in a mirror. The scanning of the slits across the reflected images kept them from simply blurring together, so that the user would see a rapid succession of images that appeared to be a single moving picture.
A variant of it had two discs, one with slits and one with pictures; this was slightly more unwieldy but needed no mirror. Unlike the zoetrope and its successors, the phenakistoscope could only practically be used by one person at a time. The phenakistoscope was only famous for about two years due to the changing of technology.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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