Persistence of vision is the optical illusion that occurs when the visual perception of an object does not cease for some time after the rays of light proceeding from it have ceased to enter the eye.
The illusion has also been described as "retinal persistence", "persistence of impressions", simply "persistence" and other variations. A very commonly given example of the phenomenon is the apparent fiery trail of a glowing coal or burning stick while it is whirled around in the dark.
Light Painting Screw by Karsten Knöfler
Wood-cut illustration of An Optical Deception (1821)
Illustration plate for Peter Mark Roget's Explanation of an Optical Deception in the Appearance of the Spokes of a Wheel Seen through Vertical Apertures (1825)
Illustrations of Michael Faraday's experiments with rotating wheels with cogs or spokes (1831)
Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving visual media. Video was first developed for mechanical television systems, which were quickly replaced by cathode-ray tube (CRT) systems, which, in turn, were replaced by flat-panel displays of several types.
Composite video (single channel RCA)
S-Video (2-channel YC)
Component video (3-channel YPbPr)
SCART