From The Wrong Side of the Condensor
This is a horrible picture, because I didn't bother with setting up the right kind of lighting and/or moving the specimen to better conditions. As a result, the tungsten filament light was refracted through the side of the ornamented glass pitcher, resulting in the bands visible here (correcting for tungsten is easy - uneven lighting, not so much).
When Orange Juice Goes Bad
Informationally speaking it's a rather rich photograph, and a fairly intriguing accidental science experiment. The more I think about it the more I'd love to have a good lab setup, for proper handling and chemical analysis - they're making rapid improvements to the "lab on a chip" configurations for field work that I hope to eventually benefit from. Until then I can't really justify the expense of my curiosity. Not even when there's Science to do.