This is a great visual illusion.
The top and bottom chess pieces radiate the same luminance. (I did some sampling to check, and it seems to check out.)
(Tip of the cap to Luiz Pessoa.)
9 hours ago
My name is Mason Porter. I am a Professor in Nordita (Nordic Institute for Theoretical Physics) and am Professor in Complex Systems in the Department of Mathematics at Stockholm University. Previously, I was a Professor in the Department of Mathematics at UCLA. Before that, I was Professor of Nonlinear and Complex Systems in the Mathematical Institute at University of Oxford. I was also a Tutorial Fellow of Somerville College. I am still a Senior Research Fellow of Somerville College.
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