Educational film catalog (1936)

525.5-537 EDUCATIONAL FifM CATALOG Sun and moon— Continued Mount Wilson and Yerkes observatories are visited. We are shown a total eclipse of sun, chromosphere, prominences, sun- spots. There are close-ups of lunar landscape, and three possible explanations of the moon's distinctive ring mountains are given jh-sh-c 525.5 Seasons Seasons and their causes. lOmin 16-sd-$27; rent $1.50 1939 Gutlohn 525.5 ALSO AVAILABLE FROM J 6mm: Cine DG NEE FA SO YMCA Produced by Science films, ltd. "Models and diagrams show how the various seasons are caused by the relative positions of the earth and the sun." Dis- tributor "A fine, factual film with commentary by John Martin." School management ei-Jh 527 Navigation Navigating a ship into harbor, (Harbor ac- tivity ser.) ISmin 16-si-$24 1939 Frith 527 One "of eight reels making up the Har- bor Activities Series [Whichj is one of the finest series of films this previwer has seen. The Individual films . . . are sepa- rate units and can be used separately. However the eight make a fine series of films on a very important topic that is passed over too lightly in our schools. The photography, to use Hollywood, is superb. . . The titles are very clever both from a technical and pedagogical viewpoint. The subject is most authentic and presented in a very interesting manner. The editing is unusual for this type of film. . , They can profitably be used in History, Geog- raphy, Civics or Activity Groups studying. Transportation, Government Agencies, Mu- nicipal Agencies, Tariff, Public Health, Safety, Water Travel, First Aid and Com- munication." Committee on classroom films "This [reel] aims to show the problems of navigation, and to highlight the maze of legal requirements for ships entering a harbor. There is a dramatic story in fol- lowing a pilot on his round of duties as he docks a passenger liner arriving from Japan. We accompany the pilot on his 'boarding boat' to the ship, up the hazard- ous rope ladder, and direct to the pilot house where he is in command of the ship until docked. The system of communica- tion between the pilot house and the en- tering ship is given. . . The instruments of navigation on the bridge are shown and explained. Ship's ofl^cers demonstrate the use of the sextant to determine the cor- rect latitude and longitude of the ship's position. Fog horns, bells, lights, buoys, etc., are shown, and it is brought out that they work automatically to guide ships when the seas become rough or the fog closes in. . . Our ship takes on freight and fuel . . . and heads again for open water." Producer 532 Density Displacement method of finding density of an irregular object. Smin 16-si-$lS; rent 75c 1940 Harmon found. 532 ALSO AVAILABLE FROM 16mm: DG Sales price given is for a lifetime lease This was planned and produced by the students of St Lawrence University in a course on the research and designing of educational films. Evelyn S. Brown, As- sistant director of the Harmon foundation was the instructor for the course. The problem is stated and apparently written on a blackboard we see: Density is equal to loss per unit volume; Materials needed. Now the materials themselves are shown— check and balances of weight, 2500cc graduated cylinders, 150cc graduated cylin- der, an irregular lump of coal, a spool of thread with a length of it unwound, pencil and paper (for calculations). Water is poured into one of the cylinders and a closeup is shown. Calculations are shown. Now the title: Weight of the object is one of the primary factors to be considered. The lump of coal is carefully weighed. Calculations shov/n again. Thread is tied around the coal and the coal is lowered into the cylinder of water. A closeup shows the water displacement. We see the calculations again and the reading has changed from 326 to 350.9. Again a title: The volume of a submerged body is equal to the volume of liquid it displaces. A closeup of the cylinders follows. Then the calculations again and we see that the difference is 24.9cc. This is shown in closeup right beside the tube. Now all of the calculations are shown with the answer plainly indicated, in closeup "A good film to use with a class in General Science or High School Physics as an introduction to such laboratory work. It would also be a good film to use as an example of what may be accomplished by amateurs in portraying a piece of work cinematically." Collaborator Jh-sh Guide 533 Physics of the air Smoke streams. 30min 16-si-$150; rent $10 Franklin inst. 533 A visualized study of aerodynamics and air-flow phenomena. The 43 scenes illus- trate the nature of flow around objects classified under headings of Lift, Drag, High lift devises, Downwash effects. Tip losses and Miscellaneous flow phenomena "I think it an excellent idea to use this film as a ready reference in the Engi- neering Department." Fleetwings, Inc. 535.6 Color Curves of color. lOmin 16-sd-loan 1941 GE 535.6 ALSO AVAILABLE FROM 16mm: Geo In this rather unusual color film a drab, cold winter world is transformed by the coming of spring and a warmer sun into a beautiful world of color. There are many shots of blooming spring flowers. We see downy yellow ducks, a red setter and col- orfully dressed children. The film then goes on to show how science has probed into this world of color by means of the recording photoelectric spectrophotometer, or color analyzer. We see how it is pos- sible to obtain accurate curves for every possible color and therefore possible to exactly match colors sh-c-adult 537 Electricity Story of electricity. (Knowledge builders * ser.) llmin 16-sd-$40; rent $2 1941 McCrory 537 ALSO AVAILABLE FROM 16mm: BdH Ea IdP Kan Deals with the early discovery of the lodestone and the properties of magnetism. si - silent; sd - sound; f • inflammable; nf • safety; p - primary; el - elementary; jh - junior high; sh • senior high; c - college; trade • trade schools 66