Special relativity to a first observer O, and frame S′ (pronounced "S prime") belongs to a second observer O′. Since there is no absolute reference frame in relativity theory, a concept of 'moving' doesn't strictly exist, as everything is always moving with respect to some other reference frame. Instead, any two frames that move at the same speed in the same direction are said to be "comoving". Therefore, "S" and "S"′ are not "comoving". The principle of relativity, which states that physical laws have the same form in each inertial reference frame, dates back to Galileo, and was incorporated into Newtonian physics.
The Einstein Theory of Relativity these images and text from the "Scientific American" article suggest that original visual elements from the German film were. This film, like much of the Fleischer's work, has fallen into the public domain. Unlike Fleischer Studio's "Superman" or "Betty Boop" cartoons, "The Einstein Theory of Relativity" has very few existing prints and is available in 16mm from only a few specialized film preservation organizations. The Einstein Theory of Relativity The Einstein Theory of Relativity (1923) is a silent short film directed by Dave Fleischer and released by Fleischer Studios. In August 1922.."Scientific American" published an article explaining their position that