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Spiralling Vortex Optical Illusion

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Look closely at the image. Do you see a spiral or a series of concentric circles?
Optical Illusions - Spiralling Vortex

Optical Illusion - Spiralling Vortex

At first glance, the image appears to be a spiral. But if you use your finger or mouse to trace the line, you'll find that the picture is actually composed of concentric circles.

How it works: The background of patterned diamonds is designed in such a way as to draw your eyes to the center of the image. Also, the circles are drawn in such a way that they appear to be made up of two shades of something twisted together, which helps lead your eyes towards the center of the image.

If you like these optical illusions, you'll enjoy these Mind-Bending Optical Illusion Books

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