144 YELLOW ILLUSION

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DO NOT TRUST YOUR EYES—NO YELLOW HERE

            Optical illusions show us how our brains work. Now, an image created by Japanese psychologist Akiyoshi Kitaoka is another lesson in our brains’ color processing.
 
Professor Kitaoka, based at Ritsumeikan University in Kyoto, Japan, has dedicated over a decade to designing a remarkable collection of optical illusions. These illusions demonstrate a mesmerizing interplay between shapes, colors, and patterns.
 
In one of his latest illusions, titled "Fantasy Yellow," you seem to see three overlapping circles of cyan, magenta, and yellow. However, a closer look reveals that the bottom right circle is not actually yellow. That color is created in our minds. 
 
 

So, why do we see a yellow circle where it does not exist? There seems to be some doubt. The answer may lie in subtractive color mixing or the perception of color created by the absorption of light by surrounding colors. Or, it may have something to do with yellow’s being the opposite color of blue, which borders the “yellow” circle.
 
If you zoom in on the image, you will see that what you think is the yellow part of the circle is actually just parallel, vertical black lines on a white background. Other circles in the design involve parallel lines of different colors but not the black ones, that are only used in the lower right circle.
 
So, the illusion of yellow occurs in an area of black and white stripes bordered mostly by blue lines.

Additionally, what seems to be the green area where the blue and yellow meet is really composed of just cyan and black verticals.

Additionally, what seems to be the green area where the blue and yellow meet is really composed of just cyan and black verticals.

 Actually, three circles are not even needed. The same yellow effect can be achieved with just one circle made up of alternating white vertical lines and black vertical lines that change color to blue where they move outside the circle shape.

 This simple optical illusion proves once again that seeing is not always believing. Do not trust your eyes or your brain!

SOURCE: spoonfeedz.com

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