One Video, 10 Optical Illusions That Will Freak You Out

Our eyes hurt.

Optical illusions can be anything from frustrating to fascinating. 

But in a new video from AllTime10s, they are just awesome. The YouTube channel pooled together ten of their favorite optical illusions, and then cued them up in a video one after the other Best of all, though, they actually explain how the science of the illusion works.

Want to know why a simple change of color makes these girls spin the opposite direction? 

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Then watch this video: