The Einstein Theory of Relativity
The Einstein Theory of Relativity (1923) is a silent animated short film directed by Dave Fleischer and released by Fleischer Studios. == History == In August 1922, Scientific American published an article explaining their position that a silent film would be unsuccessful in presenting the theory of relativity to the general public, arguing that only as part of a broader educational package including lecture and text would such film be successful.
Source: Wikipedia — The Einstein Theory of Relativity (CC BY-SA 4.0)