| Phi Phenomenon |
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The classic phi phenomenon experiment involves a viewer or audience watching a screen, upon which the experimenter projects two images in succession. The first image depicts a line on the left side of the frame. The second image depicts a line on the right side of the frame. The images may be shown quickly, in rapid succession, or each frame may be given several seconds of viewing time. Once both images have been projected, the experimenter asks the viewer or audience to describe what they saw. At certain combinations of spacing and timing of the two images, a viewer will report a sensation of motion in the space between and around the two lines, even though the viewer also perceives two distinct lines and ''not'' the continuous motion of objects referred to as Beta Movement . The phi phenomenon looks like a moving zone or cloud of background Color surrounding the flashing objects. The discovery of the phi phenomenon was a significant milestone in Gestalt Psychology . SEE ALSO EXTERNAL LINKS
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