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File:Optical grey squares orange brown.png

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Optical_grey_squares_orange_brown.png (344 × 269 pixels, file size: 22 KB, MIME type: image/png)

Summary

Description An optical illusion. Square A is exactly the same shade of grey as square B. See demonstration.
Date Original in 1995, this file in January 2004
Source File created by Adrian Pingstone, based on the original created by Edward H. Adelson
Wayback Machine 2017 archive link
Author Original by Edward H. Adelson, this file by Gustavb
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Date/TimeThumbnailDimensionsUserComment
current05:21, 25 June 2016Thumbnail for version as of 05:21, 25 June 2016344 × 269 (22 KB)OshwaddupUser created page with UploadWizard
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