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Theme of the Week

Thursday, December 02, 2010

Optical Illusion

Above picture is an example of a scintillating grid illusion. Discovered in 1994 by E. Lingelbach, it is similar to the Hermann grid illusion. When looking at the grid, dark dots seem to appear and disappear at random.


Above hypnosis illusion makes the person looking at it feel disoriented, as if they are traveling down a moving spiral to the center of the image. The hypnotic optical illusion appears to be moving when in fact it is staying still. It’s the kind of image that brings thoughts of a hypnotist making their patient sleepy to mind.

Above peripheral drift illusion gives the impression of motion despite the fact that the image is motionless. This is a common type of optical illusion and there are numerous other examples of it in action.

Above optical illusion image is known as a Fraser spiral illusion, or false spiral. The black arcs appear to form a spiral when in fact they are a series of concentric circles.

Above famous optical illusion makes the parallel horizontal lines appear to be bent when in fact they are straight. It was originally noticed amongst the tiles of a cafe wall and can now be seen in architecture such as on a large building in Melbourne, Australia.

Above excellent optical illusion is confusing because when you look at it, it appears that the nine wheels are moving, when in fact they are not.

Above image gives the illusion of depth. As one looks at the picture the black and white squares appear to form walls which lead down a long corridor.

Above depth perception illusion makes the load the woman is carrying on her head appear as large as the small tree in the background when in fact it is not.

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