Optical_grey_squares_orange_brown.png (344 × 269 pixels, file size: 22 KB, MIME type: image/png)
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Summary
DescriptionOptical grey squares orange brown.png | 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 |
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Author | Original by Edward H. Adelson, this file by Gustavb | ||
Permission (Reusing this file) |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 05:21, 25 June 2016 | ![]() | 344 × 269 (22 KB) | Oshwaddup | User created page with UploadWizard |
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PNG file comment |
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Horizontal resolution | 28.35 dpc |
Vertical resolution | 28.35 dpc |
File change date. And time | 05:11, 25 June 2016 |