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Optical illusion

Kaniza effect

What do you see?

This image actually shows three red dots on a white background set out at the apexes of an equal-sided (equilateral) triangle. However, the dots are not circular. Each has a 60 degree segment missing. These missing segments all face inwards towards the midway point between the two opposite red dots. This gives the false impression that one is looking at a white triangle resting on and overlapping three circles, so the triangle is partially obscuring a segment of each red circle at the triangle’s corners. However, this triangle has no visible sides and therefore, by definition, does not exist.

For a description of the image place your cursor over it (certain browsers only).

Answer

Did you know?

Eating brocoli, spinach and other similar vegetables regularly can help prevent eye disease. Find out more