Clay animation is a form of stop-motion animation in which each frame of a film is created and photographed independently using clay figures molded into different positions for each frame. Clay animated films were made in the US as early as 1908 and became something of a fad in 1916, but they were soon overtaken by cartoons. Clay animation is a laborious process, requiring about 21,600 stops for a 30-minute film. How many frames per second are needed to create the illusion of continuous motion? Discuss
Source: The Free Dictionary