This document provides an overview of the history and principles of animation. It defines animation as the art of creating differing images that create the illusion of movement when played rapidly. The key principles that allow for this illusion are persistence of vision, where the brain retains images slightly longer than registered, and the physiology of how light is captured and interpreted by the eye and brain. The document then outlines major developments in animation history from early mechanical toys and devices in the 1820s-1890s, to early animated films in the 1900s-1920s, the rise of Disney and other studios in the 1920s-1930s, the development of computer animation in the 1990s, and some examples of milestone animated films.