At night, through the mesh netting of my tent, I often observe a beautiful effect that forms around the moon - sort of "shockwaves" or lines that spread out from it in four directions. It's some sort of diffraction illusion? How do I photograph it? [more inside]
posted by wavejumper on Aug 2, 2008 - 10 answers

SlicedMeatsFilter: Anyone else noticed that metallic sheen that some deli meats get when they've been around for a few days? Seen most often on corned beef, but it will show up on ham too. What the heck is it? And what do you do to limit its appearance (Refrigeration does nothing! Nothing, I say!) [more inside]
posted by deliquescent on Feb 2, 2005 - 9 answers