Square Size Illusions

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram CDF Player or other Wolfram Language products.

Requires a Wolfram Notebook System

Edit on desktop, mobile and cloud with any Wolfram Language product.

The squares are all of the same size. Subdividing a square vertically makes it appear wider, while subdividing it horizontally makes it appear taller. The effect becomes apparent when the squares are subdivided even once, and becomes more pronounced as the subdivision becomes finer. We also show the effect of rotation. A square, when rotated so as to stand on a corner, appears larger than one that is standing flat on a side.

Contributed by: Christina Li (January 2016)
Open content licensed under CC BY-NC-SA


Snapshots


Details

Reference

[1] R. G. Carraher and J. B. Thurston, Optical Illusions and the Visual Arts, New York: Van Nostrand Reinhold Company, 1966.



Feedback (field required)
Email (field required) Name
Occupation Organization
Note: Your message & contact information may be shared with the author of any specific Demonstration for which you give feedback.
Send