File:Grey square optical illusion.PNG

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Summario

Description An optical illusion. Square A is exactly the same shade of grey as square B. See demonstration.
Data Original in 1995, this file in January 2004
Origine File created by Adrian Pingstone, based on the original created by Edward H. Adelson
Autor Original by Edward H. Adelson, this file by Gustavb
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Data/HoraMiniaturaDimensionesUsatorCommento
actual10:20, 24 maio 2016Miniatura pro le version de 10:20, 24 maio 20161 087 × 844 (143 KB)Avayakoptimized losslessly
21:13, 13 januario 2008Miniatura pro le version de 21:13, 13 januario 20081 087 × 844 (159 KB)Mahahahaneapneappngcrushed
03:54, 24 april 2007Miniatura pro le version de 03:54, 24 april 20071 087 × 844 (214 KB)Jrockleymuch larger version
00:41, 9 april 2007Miniatura pro le version de 00:41, 9 april 2007522 × 408 (70 KB)JrockleyPrepared for Wikipedia by Adrian Pingstone in January 2004, based on the [http://web.mit.edu/persci/people/adelson/checkershadow_illusion.html original] created by Edward H. Adelson. See also [http://en.wikipedia.org/wiki/Same_color

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