Introduction [1]
Optical illusions in this post come from recent work in vision and perception laboratories, and others come from a variety of modern artists, who have deliberately incorporated an "obvious" illusion into a drawing, photograph, or sculpture. There were also quite a number of illusions that were created specially by the team, who put this book together. Of course, you will find the familiar classics here too, making the images below an invaluable reference source for those interested in studying illusion.
Optical Illusions - Part I [1]
Color Assimilation Do you perceive a reddish hue within the white squares on the right and a bluish hue within the white squares on the left?
Shepard's Tabletop: These two tabletops are absolutely identical in size and shape. If you don't believe it, trace only the tabletops and see for yourself.
Fraser's Spiral: It is one of the most powerful illusions known. What you see appears to be a spiral, but it is really a series of perfect concentric circles! This illuson is so powerful that it has been known to induce incorrect finger tracing.
Extent and Perspective: Although they appear to be dramatically different in length, lines AB and CD are equal.
The Scintillating Grid: The disks at the junctions will appear to flash, when you move your eyes around this image.
Checker Shadow: The light check inside the shadow is identical to the dark check outside the shadow. If you don't believe it, cut out a peephole exactly the size of each square and test it.
Escher's Impossible Box: Belgian artist Matheau Haemakers, drawing his inspiration from a print by Dutch graphic artist M.C. Escher, has created a physical model of an impossible box.
Ouchi Illusion: Move the image back and forth. The center section may appear to move in a direction different from its surroundings. The center section will also appear to be at a different depth.
Reference:
[1] A. Seckel, The Fanatastic World of Optical Illusions, Carlton Books Limited (2002).
Optical illusions in this post come from recent work in vision and perception laboratories, and others come from a variety of modern artists, who have deliberately incorporated an "obvious" illusion into a drawing, photograph, or sculpture. There were also quite a number of illusions that were created specially by the team, who put this book together. Of course, you will find the familiar classics here too, making the images below an invaluable reference source for those interested in studying illusion.
Optical Illusions - Part I [1]
Reference:
[1] A. Seckel, The Fanatastic World of Optical Illusions, Carlton Books Limited (2002).
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