This afternoon I was coming back from dropping off a DVD at the Redbox in front of my local Walgreens (okay, it was Up if you must know) and as I took my usual shortcut between the twin apartment buildings across the alley from my place I noticed this:
"Well, who the hell messed up the bricks?" I wondered. But they weren't messed up; these were reflections caused by the setting sun. "That is so cool!" I thought. "Camera time!"
"So what, exactly, is casting these way-cool reflections?" Drawing upon my vast knowledge of (non-calculus-based, passed by the skin-of-my-teeth) college physics I did a 180 and checked the wall opposite. A row of second-story windows was blazing with sunlight (I had my Lumix set on "Intelligent Auto" because, well, I'm lame like that, so all sorts of magical exposure compensation has removed the glare), but look at 'em:
WTF? There was nothing, nothing in any of the windows to explain the patterns I was seeing.
It's a mystery.