These are two identical, straight lines. Kind of boring, right?

How Do Optical Illusions Work?

By American Chemical Society —— Bio and Archives August 6, 2015

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But what happens when you change what’s going on around them? All of a sudden, the lines look like they’ve changed size in relation to each other; they could shrink and grow; they might change to different shades; they may stretch and compress; and they could bend, buckle, or even change directions. More...

American Chemical Society -- Bio and Archives | Comments

American Chemical Society, ACS is a congressionally chartered independent membership organization which represents professionals at all degree levels and in all fields of chemistry and sciences that involve chemistry.