Motion Pictures Available for loan without charge from the AEC Headquarters Film Library, Division of Public Information, U. S. Atomic Energy Commission, Washington, D. C., and from other AEC film libraries. Each of the following motion pictures explains atomic structure, fission, and the chain reaction. Additional contents are listed below with the film. _A Is for Atom_, 15 minutes, sound, color, 1964. Produced by the General Electric Company. This film discusses natural and artificially produced elements, stable and unstable atoms, principles and applications of nuclear reactors, and the benefits of atomic radiation to biology, medicine, industry, and agriculture. (Level: elementary through high school.) _Atomic Energy_, 10 minutes, sound, black and white, 1950. Produced by Encyclopedia Britannica Films, Inc. The film explains nuclear synthesis and shows how, through photosynthesis, the sun’s energy is stored on earth and released through combustion. (Level: intermediate through high school.) _Controlling Atomic Energy_, 13½ minutes, sound, color, 1961. Produced by United World Films, Inc. This film gives a summary explanation of the following: radioactive atoms, radioactivity measurement, nuclear reactors, and the production and application of radioisotopes in biology, medicine, industry, agriculture, and research. (Level: 5th through 8th grades.) _Introducing Atoms and Nuclear Energy_, 11 minutes, sound, color, 1963. Produced by Coronet Instructional Films. This film discusses nuclear fusion in the sun and, very briefly, the uses of nuclear energy. (Level: 4th through 9th grades.) _Atomic Physics_, 90 minutes, sound, black and white, 1948. Produced by the J. Arthur Rank Organisation, Inc. This film discusses in detail the history and development of atomic energy with emphasis on nuclear physics. Dalton’s basic atomic theory, Faraday’s early electrolysis experiments, and Mendeleev’s periodic table, the investigation of cathode rays, discovery of the electron, how the nature of positive rays was established, and the discovery of X rays are among the historical highlights. Explanation is presented of the work of the Joliot-Curie’s and Chadwick in the discovery of the neutron, and the splitting of the lithium atom by Cockcroft and Walton. Einstein tells how their work illustrates his theory of equivalence of mass and energy. (Level: high school.) _Unlocking the Atom_, 20 minutes, sound, black and white, 1950. Produced by United World Films, Inc. This film explains the properties of alpha, beta, and gamma rays, cyclotrons, and the contributions of various scientists. (Level: junior and senior high school.)