Optical Illusion Website
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SPY BASE
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Latest Opticals
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Have You Seen All Our Galleries Yet?
Which is the real Hitler? - Just Hover Over Picture or Click
We have added a great new gallery to our list. It is a Body Art Gallery.
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What's in the Spy Blog?
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Optical Art
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The Ebbinghaus Illusion
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Multistable Perception
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The Peggendorff Illusion
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The Herring Illusion
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It’s 1964 and the public is occupied with dealing with the assassination of President John F. Kennedy, the on-going Civil rights movement, the invasion of the Beatles, and not far behind, the movement of optical art or op art is slowly making itself known. That year belonged to the artists who immersed ....
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Hermann Ebbinghaus, a German psychologist, gave the scientific world a wonderful illusion, giving them a gateway to finding out how a human mind functions. The brilliant psychologist left a legacy behind, but before leaving, bestowed upon the world the Ebbinghaus Illusion. However, it wasn’t.....
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Have you ever seen a picture that depicts two entirely different images? Most probably, you have, but never bothered to learn the name of the phenomena that’s behind it, until now. The phenomenon that’s been intriguing generations of people is called multistable perception. Multistable ...
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It was the year 1860, scholar and physicist Johann Christian Poggendorff was working as an editor of a well-known magazine when Johann Karl Friedrich Zöllner handed him an illusion.
No one knew that Zöllner’s illusion would immediately give birth to the Poggendorf’s illusion. |
The human mind is brilliant at interpreting images, but at times, it can be tricked into believing things that aren’t as they appear.
The Herring illusion tested this and found that the human mind interprets straight lines as curved when placed on an image such as this illusion of an escaping flower. |
Three new images added to our Street Art Gallery
Metamorphosis
Street Art
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Popular Opticals
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The Human Brain |
Cliff Face |
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The Shepard Tone |
A Shepard tone, named after Roger Shepard, Professor of Psychology at Stanford University, is a sound consisting of a superposition of sine waves separated by octaves. When played with the base pitch of the tone moving upwards or downwards, it is referred to as the Shepard scale. This creates the auditory illusion of a tone that continually ascends or descends in pitch, yet which ultimately seems to get no higher or lower. It has been described as a “sonic barber’s pole”. |
The Greatest Magic Trick in the World
Mirror Anamorphosis
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