I first saw this on Alan van Roemburg’s Tumblr blog, and there was no indication that it wasn’t his own work. Ends up, though, that Van Roemburg took the image from Takamasa Matsumoto. (Van Roemburg has since added a “thanks to Takamasa”, but that wasn’t there when I first linked to it.) My apologies to Takamasa Matsumoto.
★ Monday, 20 June 2011