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This image is a derivative work of the following images: File:Pencil_in_a_bowl_of_water.png licensed with Cc-by-sa-3.0-migrated, GFDL 2005-06-12T17:38:49Z Anton 287x182 (6324 Bytes) mirror version (fits better to other pictures in this category).
Blivet illusion, another impossible figure based on figure-ground confusion. The image is widely reproduced and discussed. Brad Honeycutt, author of Exceptional Eye Tricks, calls the Shepard elephant "one of the most famous and classic optical illusions."
A pencil or another rigid straight line can appear as bending like flexible rubber when it is wiggled fast enough between fingers, or otherwise undergoing rigid motion. Persistence of vision has been discarded as sole cause of the illusion. It is thought that the eye movements of the observer fail to track the motions of features of the object ...
Erik Johansson (born April 1985) is a Swedish artist based in Prague who creates surreal images by combining photographic elements and other materials into surreal scenes. [2] [3] [4] He combines images to create what looks like a real photograph, but creates logical inconsistencies to impart an effect of surrealism.
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Hybrid image: A Hybrid image is an optical illusion developed at MIT in which an image can be interpreted in one of two different ways depending on viewing distance. Illusory contours: Illusory contours or subjective contours are a form of visual illusion where contours are perceived without a luminance or color change across the contour ...
One or two assistants manipulate the contortionist's body, bending, rolling, and posing it in various ways, creating the illusion of a limp, inanimate object. The act culminates with the assistants squeezing the contortionist into a surprisingly small box, adding to the comedic and astonishing effect of the performance.
Looking at a straight object, such as a pencil in the figure here, which is placed at a slant, partially in the water, the object appears to bend at the water's surface. This is due to the bending of light rays as they move from the water to the air. Once the rays reach the eye, the eye traces them back as straight lines (lines of sight).