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Zollner is a simple screensaver based on the Zöllner optical illusion (seeöllner_illusion for details). Are the diagonal lines parallel or not?

I was somewhat less successful recapturing the illusion in screensaver form, as adding colors and animation tends to weaken the optical effect.

Unzip and place Zollner.saver file in your preferred screensaver directory (usually /Library/Screen Savers).

Requirements for Zollner

Mac OS 10.5 or later
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Zollner User Discussion

Current Version (1.x)
Downloads 560
Version Downloads 560
License Free
Date 04 Aug 2011
Platform Intel 64 / OS X / PPC 32 / Intel 32 / PPC 64
Price Free
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