I didn't really know where to post this so I took a shot. So I know we've got our little Macro Guessing Game thread, but you should check out what this guy does with a microscope! It's absolutely awesome the colours of these crystals and molecules that he gets. http://www.oncloserinspection.com/ There are also movies of growing crystals that are amazing to watch. What blew my mind were the cross polarized crystals. The colours = WOW! BTW what is cross polarizing? Is it just putting two layers of polarizing filter infront of the camera - but so each of them have different effects.