Are These Lines Straight?

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This Demonstration shows a combination of Hering's and Zöllner's illusion. You can see whether the lines are straight or not by moving the "thickness of red lines" slider.

Contributed by: Osman Tuna Gökgöz (March 2011)
Open content licensed under CC BY-NC-SA


Snapshots


Details

M. Bach, Hering Illusion.



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