9/30 http://www-bcs.mit.edu/people/adelson/checkershadow_illusion.html
(self-documenting link)
\_ Amazing. Even after measuring the shade of grey with Photoshop, I
still find it hard to believe the two checks are of the same gray.
\_ yeah I had to do that also, I cut and pasted them side by side.
\_ Uhm... I simply blocked out the rest of the screen with some paper.
I don't see how they're the same.
\_ The "A" and the "B" letters are still deceiving your brain.
\_ I blocked that out too. Maybe I'm just blind.
\_ maybe this animated GIF will help.
http://www.csua.berkeley.edu/~jameslin/tmp/checkershadow-AB-anim.gif |