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Grid Optical Illusion Design Postcard
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Grid Optical Illusion Design Postcard
Lingelbach Scintillating Grid Optical Illusion The scintillating grid illusion is an optical illusion, discovered by E. Lingelbach in 1994, that is usually considered a variation of the Hermann grid illusion. It is constructed by superimposing white discs on the intersections of orthogonal gray bars on a black background. Dark dots seem to appear and disappear rapidly at random intersections, hence the label "scintillating". When a person keeps his or her eyes directly on a single intersection, the dark dot does not appear. The dark dots disappear if one is too close to or too far from the image. Description from Wikipedia
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Product ID: 239228289502131240
Created on: 5/11/2015, 9:46 AM
Rating: G