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File:Grey square optical illusion.svg

原本檔案 ‎（SVG檔案，表面大細： 764 × 591 像素，檔案大細：22 KB）

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描述 Vectorized version of Image:Grey square optical illusion.PNG by Jrockley
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Edward H. Adelson, the copyright holder of this work, hereby publishes it under the following license:
The copyright holder of this work allows anyone to use it for any purpose including unrestricted redistribution, commercial use, and modification.

Please check the source to verify that this is correct. In particular, note that publication on the Internet, like publication by any other means, does not in itself imply permission to redistribute. Files without valid permission should be tagged with {{subst:npd}}.

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This image is a derivative work of the following images:

  • Image:Grey_square_optical_illusion.PNG licensed with Copyrighted free use
    • 2008-01-13T21:13:45Z Mahahahaneapneap 1087x844 (163090 Bytes) pngcrushed
    • 2007-04-24T03:54:36Z Jrockley 1087x844 (218837 Bytes) much larger version
    • 2007-04-09T00:41:43Z Jrockley 522x408 (71920 Bytes) Prepared for Wikipedia by [[w:User:Arpingstone|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

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25 7 2008

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