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:

25 Billion (From Dan Meyer) #anyqs

Well? Live link: 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: