High viscosity silicon oil is sandwiched between two circular plates. As the upper plate is lifted at a constant speed, air flows in from the sides. The initially circular interface develops finger-like instabilities, due to the Saffman-Taylor mechanism, as the air penetrates. Eventually the fluid will completely detach from one plate. (Photo credit: D. Derks, M. Shelley, A. Lindner)
See also: http://www.ismittromneythepresident.com?
The Guardian’s interactive team—the same team that produced, among other visual feats, the rolling history of the Arab uprisings and a Facebook-linked gay rights wheel (which co-won a prize for explanatory reporting at the Online News Association awards last weekend)—is out with a new election project which features a whimsical, animated, and easy-to-understand balloon UI.