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Snack name |
Description |
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A flash of light prints a lingering image in your eye. |
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It's all done with mirrors! |
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A rotating black-and-white disk produces the illusion of color. |
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Stare at a color and see it change. |
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To see or not to see. |
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Some lightbulbs appear to wiggle and flash when you give them the raspberry, but the only thing wiggling is you. |
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Your brain combines information from your eyes in surprising ways. |
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Make a friend disappear, leaving only a smile behind. |
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Shadows are not all black and white. |
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What happens when you get off the merry-go-round? |
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If you want to stay hidden, you'd better stay still. |
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See yourself become someone else. |
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Now you see it; now you don't. An object without a sharp edge can fade from your view. |
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Your experience of the world influences what you see. |
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Without a boundary, it's hard to distinguish different shades of gray. |
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There's more to seeing than meets the eye. |
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See pictures in thin air. |
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When you overlap materials with repetitive lines, you create moire patterns. |
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We are not usually aware of our eyes' limitations. |
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Your eye and brain hold on to a series of images to form a single complete picture. |
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Who needs expensive optical equipment? |
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Even with our eyes closed, we have a sense of body position - where our arms and legs are, for example, and that we are moving them. Muscles, tendons, joints and the inner ear contain proprioceptors, also known as stretch receptors, which relay positional information to our brains. |
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Your pupil changes size to control how much light enters your eye. |
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Create the image of an object in space using a $2 ornament. |
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See your blind spot. |
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You can use a dim point of light to cast a shadow of the blood supply of your retina onto the retina itself. This will allow you to see the blood supply of your retina, and even your blind spot. |
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Receptors on our tongues bind to chemicals in our food and relay the information about the chemicals to our brain. Surprisingly, all those wonderful tastes are transmitted to our brains through only four types of receptors on our tongues - those for sweet, sour, salt and bitter. |
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A clueless way to determine the size of an object. |
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A spinning rod with a mark near one end is set rotating and spinning at the same time. Amidst the blur of the spinning cylinder, the mark appears three times, forming a stationary triangle. |
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This visual illusion makes the palm of your hand appear to squirm and twist. |
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Using two eyes gives you depth perception. |
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A face seen upside down may hold some surprises. |
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When you view short bursts of moving images, you see some interesting effects. |