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Poggendorff Illusion

 

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Copyright © 1996-2009 Alexander Bogomolny

 

 

 

 

 

 

 

 

 

Poggendorff illusion

Parallel lines appear to break the transversals off. The closer the inclination of the lines in the two families, the more pronounced is the effect.

This is a variant of another Poggendorff's illusion.

References

  1. The Mind's Eye, Readings from SCIENTIFIC AMERICAN, W. H. Freeman and Company, 1986

Copyright © 1996-2009 Alexander Bogomolny

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