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Which central circle is bigger in these two images; the left one or the right? The left circle appears to be much bigger, doesn?t it? In reality, the two central circles are exactly the same size.
This is an effective optical trick that works with the use of negative and positive light and how we expect sizes of circles to behave. Because the circle on the left is surrounded by small outer circles, it dominates the pattern and appears much bigger. The inner circle on the right, however, is surrounded by much larger circles, making it appear smaller in comparison.
Is the left center circle bigger?
No, they're both the same size.
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