Light Limaçons and Cardioids

While putting away the bowls, I noticed some nice limaçons and cardioids made from the refraction of light. Video of the changing shape – Limaçons   For more info: http://mathworld.wolfram.com/Cardioid.html http://en.wikipedia.org/wiki/Cardioid http://en.wikipedia.org/wiki/Caustic_(optics) http://mathworld.wolfram.com/Limacon.html http://en.wikipedia.org/wiki/Limacon

25 Billion (From Dan Meyer) #anyqs

Well? Live link: http://www.apple.com/itunes/25-billion-app-countdown/ For those (geeks) looking for more detail on how the rate is determined, you might be able to find the rate in the somewhat obfusticated javascript file found here: http://images.apple.com/global/scripts/downloadcounter.js