4. How many colors do you see? The answer is 3. If you were thinking 4 or 5, you’re not alone. Our perception of color is based on the light and shadow surrounding them. So when the white squares surround the color, they look lighter than when the colored squares are side by side.
5. How many faces can you spot in this painting of Don Quixote? In the foreground is his head and shoulders . Because of the light color, our eyes are first drawn to this. But then other faces begin to appear…
6. Are these lines parallel or do they slope? This illusion uses black and white to trick the brain. The lines are in fact, straight.
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