Complete Catalogue 8mm Kodascope Library of Motion Pictures (1936)

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SECTION I. (d) Popular Science (Cont.) 25 83203 Energy from Sunlight 1 Reel Explains the principle of a solar engine, the energy of sunlight, wind and falling water. Shows how energy Irom sunlight stimulates plant growth, and is stored for future use in the form of wood and coal. 83207 The Behaviour of Light 1 Reel Introduces the subject of light. Presents the ideas of transmission, shadows and eclipses. Explains the formation of images by plane, convex and concave mirrors. Demonstrates the cause of refraction. Illustrates dispersion of light, colour and the rainbow. (For continuation of this subject, see 83223, 83225 and 83226). 83212 Food and Growth 1 Reel A feeding experiment with white rats, actually carried out in a classroom, demonstrates the food value of milk as compared with coffee or sweets. The system of feeding, cleaning the cages and charting of growth records are gi\'en in detail. 83217 Weather Forecasting 1 Reel The process of collecting, tabulating and interpreting weather data obtained from observations and instruments is demonstrated. In animation, a procession of low and high pressure areas moves across the United States from west to east. 83223 Optical Instruments 1 Reel This film shows the optical principles of : — Mirrors ; the Eye and Spectacle Lenses ; The Camera ; Stereopticon and Moving Picture Projectors ; Microscopes and Telescopes. 83225 Lenses 1 Reel Emphasises those phases of lens refraction that can be admirably shown by animation ; properties of a convex lens, real and virtual images, changes of magnification ; effect of a concave lens ; formation of the virtual image ; construction and explanation of achromatic lenses. 83226 Illumination 1 Reel Records the principal methods of lighting. Shows the principle and the use of the photometer and the foot-candle meter ; depicts the cause and correction of glare in home and factory, and the character of direct, indirect and combined sj'stems of lighting. Order by numbers. FOR PRICES SEE PAGE 3