Things are not always how they appear to be.
Even though your eyes will tell you otherwise, the lines in the checker board are all straight and parallel or perpendicular to each other. There are no curved lines on that board. Don't believe me? Look below at what happens when the little white squares are taken out of the black boxes. If that is not proof enough, place a straight edge on the computer screen along the apparently curved lines and note how they actually conform to the straight edge.
_________________________________________________________________________Check out the tables below. Your eyes will tell you that the top surfaces on one is longer and the other is wider, but actually they are the same. Really. Trace one with a piece of paper and move it to the other table top -- exact fit. Weird, huh?
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Even though your eyes will tell you differently, the squares A & B are actually the very same shade of gray. Scroll down to see the evidence. If you're still not satisfied, cover up the whole picture except those two squares, and you'll see it.
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PROOF THAT 2 = 1
- let a = b
- a² = ab ...................................... [multiply both sides by a]
- a² + a² - 2ab = ab + a² - 2ab .... [add (a² - 2ab) to both sides]
- 2(a² - ab) = a² - ab .................... [factor the left, and collect like terms on the right]
- 2 = 1 ......................................... [divide both sides by (a² - ab)]
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Link to more illusions: http://www.eye-illusions.com/recs-optical-illusion.html
