We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
32 PHYSICAL RESEARCH scattering amplitude; expression of conservation of angular momentum and of number of particles by writing the scattering amplitude in terms of phase shifts; relation between range of the force and the number of angular-momentum states present; relation between quantum mass and range of force; inclusion of one-pion exchange effects in the phase-shift analysis; the number of independent scattering experiments using two spin-V 2 particles, illustrated by three-dimensional models for the experiments, P, D, R, A, C nn , and C kp ; and problems en- countered in trying to determine the best phase-shift solution in terms of least squares. An instructor's manual for use in discussing the subject matter is included in the film case. THE ATOM IN PHYSICAL SCIENCE (Understanding the Atom Series) See page 78 ATOMIC PHYSICS (1948). 90 minutes, black and white. Produced by J. Arthur Rank Ltd., England, and released in the U. S. by United World Films. For sale from United World Films at $523.00 per print, including shipping case. Available for loan (free) from USAEC headquarters and field libraries. NOT cleared for television. This film discusses the history and development of atomic energy, stressing nuclear physics. Dalton's basic atomic theory, Faraday's early experiments in electrolysis, Mendeleev's periodic table, and early concepts and size of atoms and molecules are discussed also. The film demonstrates how cathode rays were investigated and how the electron was discovered; how the nature of positive rays was estab- lished; and how X rays were found and put to use. The film also pre- sents research tools of nuclear physics, explains work of Joliot-Curie and Chadwick in discovery of neutron, and splitting of lithium atom by Cockcroft and Walton. Einstein tells how their work illustrates his theory of equivalence of mass and energy. Uranium fission is ex- plained, as well as why it is possible to make an atomic bomb. BETA RAY SPECTROMETER (1963). 7 minutes, color. Produced by the USAEC's Argonne National Laboratory. For sale by Byron Motion Pictures, at $22.71 per print, including shipping case, F.O.B. Washington, D. C. Available for loan (free) from USAEC headquarters and field libraries. Cleared for television. By animation and live action, this film explains the principles and working of the Coincidence Beta Ray Spectrometer, a device which is used to measure the intensity and direction of electron emissions known as beta particles. Components of the device are shown and assembled. A source is introduced. Masking for beam direction and size is demonstrated. Detectors are shown and explained.