Awesome rustic photography by Desiree Casoni.
Anyone know where you can get stamps like these made with a custom design?
Which gray block is actually darker? Hold something over the seam to find out.
Mindblowing, right? Now for the fun science part: how does this effect work? Well, it works because whoever made this thing is a fucking witch. I mean, Jesus. QED. (via ★interesting-links)
I don’t like this. We all know that without the shadow the top square would be a much darker value than the bottom, in which case I’m still hard pressed to say that the top block is still darker. I feel like that hardly counts as an illusion. Love jkottke’s comment though ^_^