This ball is on a roll. In this optical illusion, you’ll see a hand place a metal ball at the bottom of what looks like an ordinary slide. However, it immediately rolls uphill, seemingly defying the ...

Add Yahoo as a preferred source to see more of our stories on Google. Can you trust your own eyes? This video might be one strong case for a resounding, “No!” Even after the trick behind the magic is ...

While new optical illusions go viral all the time, here are some of the most famous illusions that have kept us scratching our heads for years.

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Can you see through the camel-flage? Another day another wildlife safari for the eyes: In this animal-based optical illusion, viewers are challenged to spot the camel within the spectrum of colors.

"Artists & writers guild books"--P. 4 of cover. "Golden books"--P. 4 of cover. Contains acetate sheets, cards, 3D glasses and other aids in pocket. EYE MAGIC : FANTASTIC OPTICAL ILLUSIONS : AN ...