Preamble
For your convenience, I have listed below other posts in this series:
Optical Illusions - Part I
Optical Illusions - Part II
Introduction [1]
Most of us take vision for granted. We seem to do it so effortlessly; however, perceiving images, objects and motion is a very complicated process. Only in the last one hundred or so years, and especially in the last twenty years, have scientists started to make some progress in understanding vision and perception.
Optical Illusions - Part II [1]
Man on the Moon.
This image of Buzz Aldrin's helmet was made out of a collage of space images.
Melancholy Tunes on a Flemish Winter's Day.
Flemish artist Jos De May captured this incredible scene on a winter's day. How does that left column come forward?.
Crazy Nuts.
Can you figure out how the straight steel rod miraculously passes through the seemingly perpendicular holes?
Figure/Ground.
What is hiding here? Before you check out the answer, search carefully, because once you perceive the hidden image, you will never be able to see this image in its meaningless state again.
Kissing Couple Illusion.
An illusory kiss by American artist Jerry Downs.
Impossible Stair case.
What happens when you walk around this peculiar staircase? Where is the bottom or top step located?
Ball and Shadow Illusion.
Are the balls in the two illustrations in different positions relative to the background?
Reference:
[1] A. Seckel, The Fanatastic World of Optical Illusions, Carlton Books Limited (2002).
For your convenience, I have listed below other posts in this series:
Optical Illusions - Part I
Optical Illusions - Part II
Introduction [1]
Most of us take vision for granted. We seem to do it so effortlessly; however, perceiving images, objects and motion is a very complicated process. Only in the last one hundred or so years, and especially in the last twenty years, have scientists started to make some progress in understanding vision and perception.
Optical Illusions - Part II [1]
Man on the Moon.
This image of Buzz Aldrin's helmet was made out of a collage of space images.
Melancholy Tunes on a Flemish Winter's Day.
Flemish artist Jos De May captured this incredible scene on a winter's day. How does that left column come forward?.
Crazy Nuts.
Can you figure out how the straight steel rod miraculously passes through the seemingly perpendicular holes?
Figure/Ground.
What is hiding here? Before you check out the answer, search carefully, because once you perceive the hidden image, you will never be able to see this image in its meaningless state again.
Kissing Couple Illusion.
An illusory kiss by American artist Jerry Downs.
Impossible Stair case.
What happens when you walk around this peculiar staircase? Where is the bottom or top step located?
Ball and Shadow Illusion.
Are the balls in the two illustrations in different positions relative to the background?
Reference:
[1] A. Seckel, The Fanatastic World of Optical Illusions, Carlton Books Limited (2002).







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