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from HubPages

Two Faces or a Vase? Old or Young Lady? 10 Simple but Wonderful Optical Illusions

"Rubin Vase. This is one of the most famous optical illusions that exists. There are two things that you can see in this image ... In black you can see two faces looking directly at one another. In white, you can see an interesting curved vase."

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Concentrate on the 4 dots in the middle of the picture for about 30 seconds. Then close your eyes and tilt your head back. You'll see a circle of light, continue looking at the circle. What do you see? Amazing, isn't it...

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from HubPages

Two Faces or a Vase? Old or Young Lady? 10 Simple but Wonderful Optical Illusions

Face in the trees: an illusion. I have been called a wordsmith. I have been called a word merchant. I usually refer to myself as a used word salesman. But, basically, all of us who write are magicians who use words to deal in illusions. It’s... Read more

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COOL! The universe has its secrets. Extra dimensions of space might be one of them. If so, the universe has been hiding those dimensions, protecting them, keeping them coyly under wraps. From a casual glance, you would never suspect a thing. It's hubris to think that the way we see things is everything there is. -Lisa Randall, theoretical physicist via She Sings to the Stars

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from webneel.com

25 Cool Optical Illusion Pictures to challenge your mind

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from UltraLinx

20 Awesome Optical Illusions Using Typography

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