Educational film catalog (1936)

EDUCATIONAL FILM CATALOG 520-523.7 Geometry in action— Continued smooth curves. In the design, construction and operation of an airplane, geometry plays a vital part. Travel on water is in ships that depend on geometry for their creation and navigation, whether it be a rowboat or the most modern super liner. The Normandie. Nature itself is based on geometry- illustrated by several trees. We find here symmetry and fundamental geometric quality. It is more noticeable in the leaf. In fruits such as the apple and pear we find good examples of symmetry. A honey- comb. The spider must know his geometry for his web is built on a foundation of triangles. In agriculture we find geometry applied. Plowing and planting are done In parallel rows. We see the wrong way to plow a hill and the correct way. From the old fashioned water wheel to modern machinery we find geometry play- ing a part in our industrial life. Machines are composed of parts built according to definite geometric patterns, triangles, circles, rectangles, cylinders and so on. The tools required to operate, depend upon geometry also. The manufacturers of clothing need geometry. In geometric lan- guage he cuts thru hundreds of layers of cloth which are congruent to each other. In construction work geometry is a factor. Blueprints. A derrick. Scaffolding. The geometric pattern of a modern housing project allows the buildings to have the most light and air for the space available. The Empire state building and some other big buildings. A building based on the isoscles triangle. Parallel lines are the dominating theme in every structure. The trapezoid is a sturdy reminder of the days when it was the support of mighty temples. We find the cylinder used as industrial tanks and on the farm in the silo sur- mounted by cones. Our great bridges embody geometry in every stage. In the field of science geometry Is con- stantly at work. Man in a prescription department. Construction and operation of the microscope and other scientific In- struments are based upon geometric prin- ciples. The home has its claim upon geometry, from the design of its furnish- ings to the performance of everyday house- hold duties. Plans of rooms. Picture hung crooked is made to hang truely vertical by the simple method of holding a plumb line along one edge. In resetting the hands of a clock for the correct time, many different angles are formed. Dia- gram showing incorrect focus and effect on lines of light, and how the lines of light form different triangles. Many sports are ruled by geometry. A baseball diamond is a square. A gridiron has parallel markings. Basketball is played with a sphere on a rectangular court. The skier must keep his skiis parallel. At the track meet parallel straight lines and parallel arcs keep the runners in their proper lanes. The tennis court is marked off by a series of rectangles. Boat crews show good form only when the bodies of the men as well as their oars remain constantly parallel. A triangular sail against a perpendicular mast achieves greatest efficiency for a graceful sailing craft. The huge polygon of the ferris wheel is strengthened by the radius lines that extend from the steel core at the center. On a little picnic geometry tags right along. We lay out the square table cloth, set on it the congruent paper plates, open the cylindrical fruit juice can and cut the pie into sectors. A quick over view of the things we have seen and then a triangle of birds against the sky "This is a very good film to be used as an introduction to the study of Intuitive Geometry in the junior high school. The technical make-up of the film is rather inconsistent. . . If a school wants a sound film to be used to develop an interest In the study of geometry this film is excellent for such a purpose as it does show how geometry is not only all about us but Is essential in almost everything man does." Committee on classroom films Jh-8h-c 520 Astronomy Planets —asteroids—comets. IR 16-si-sd- $24-$36; rent $1 B&H 520 ALSO AVAILABLE FROM 16mm: IdP Comparison of Ptolemaic and Copernican theories of universe. The solar family. Phases of Venus, parade of seasons on Mars, Giant Jupiter and its moons, in motion. Changing aspects of ringed Saturn. Halley's and Brook's comets. Made by Ruroy Sibley 522 Telescope World's largest telescope reflector. lOmin 16-sd-$36; rent $2 1940 B&H 522 ALSO AVAILABLE FROM 16mm: IdP "This movie combines entertainment with educational value, for it is a scientific record of grinding and polishing the new- est, two hundred inch telescope reflector at the California Institute of Technology Observatory. The picture has been ap- proved by the Institute." Movie makers sh-c-trade-adult 523.4 Planets Jupiter. IR 16-si-$30; rent $2 35-si-nf-$50 Univ. of Chicago press 523.4 This picture shows the motion of the major satellites of Jupiter, the rotation of the planet itself on its axis, and nebulae, star clusters, and star fields. It is a production of the McMath-Hulbert observatory of the University of Michigan sh 523.7 The sun Solar eclipse of June 8, 1937. 14min 16-si- rent 50c AMNH 523.7 This subject was photographed by Dr Clyde Fisher and Charles H. Coles. We see the expedition which left the Hayden Planetarium, in New York, for Peru to study the 1937 solar eclipse. Shots on board the ship, and a few of the coast line. We see them greet the Japanese party which was also there for observation. The neces- sary equipment was set into place, and much of the complicated apparatus and telescopic cameras explained to a group of visiting Peruvian school children. The eclipse is shown at various stages, and the people observing this phenomenon are shown about their various tasks. A painter is seen trying to capture the dia- mond ring at the end of totality on his canvas. And the film ends with another view of the eclipse Jh-sh-c Sun and moon. IR 16-si-sd-$24-$36; rent $1 B&H 523.7 ALSO AVAILABLE FROM 16mm: IdP Condensed from Ruroy Sibley's "Seeing the universe" (listed in 1939 catalog, class 520) si - silent; sd - sound; f • inflammable; nf - safety; p - primary; el - elementary; jh • Junior high; sh • senior high; c - college^ trade - trade schools 65