Seeing Is Not Believing. An Optical Illusion You'll Swear Is Moving: It's Not

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2. An Optical Illusion You'll Swear Is Moving. 

3. It Isn't.

4. Phil Plait

5. http://www.slate.com/blogs/bad_astronomy/2013/12/15/optical_illusion_motion_using_vertical_slits.html

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7. Optical Illusions: Seeing Is Not Believing & Even Less So In The Age Of Photoshopping And CGI

8. http://paxonbothhouses.blogspot.com/2016/02/optical-illusions-seeing-is-not.html

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