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15881. Introduction to optics (23:18)

Date:
1959
Summary:
Deals with the approximation that light travels in straight lines and shows four ways in which light can be sent--diffraction, scattering, refraction, and reflection. Diffraction is shown using point light sources, a wide screen, and a variable slit. Scattering is observed in a smoke-filled box. Refraction and reflection are shown using an optical tank and also an under-water camera to observe the appearance of several swimmers sitting alongside the pool; effects illustrated include image displacement, the critical angle, and total internal reflection. Concludes with the problem of why the images produced by three pinholes merge into one when intercepted by a lens. Demonstrations by Elbert R. Little, PSSC.

15882. Essentials of good speech : pitch, 1 (13:25)

Date:
1974
Summary:
Discusses pitch as an aspect of voice production, and how it refers to the degree of highness or lowness of sound. Emphasizes pitch as a "part" which will be applied to "wholes." Presents a child's first lesson at the "Presentation Stage" of pitch, in which touch variations are introduced and explained.

15883. Major area of speech : words : you're welcome 1 (11:16)

Date:
1974
Summary:
Assesses the automatic and conscious production of a phrase. Depicts a teacher using the synthetic approach to begin a correction of the "whole" word, "welcome". Observes the child moving from "Presentation Stage" to "Imitation Stage" of Face A of the speech model. Examines the ability of the pupil to discriminate the difference in accent between her production (wel kum) and the correct accent (wel km). Shows the teacher using a discriminating activity, interweaving touch, vision, and auditory discrimination.

15884. Major area of speech : consonant : SH 8 (10:48)

Date:
1974
Summary:
Works on the second nucleus word, "show", on Face A of the speech model through the "Production Stage". Shows evaluation and practice on all five nuclei words at the no-error level of practice at the "Production Stage" of Face A. Includes one GLGSP expanding language.

15885. How green plants make food (13:48)

Date:
1961
Summary:
Uses animation, microphotography, and live action to show how green plants make food in the process of photosynthesis. Explains that as scientists study the processes involved in photosynthesis they may some day be able to duplicate the work of plants and make more efficient use of plants.

15886. Heat as radiant energy (13:23)

Date:
1962
Summary:
Diagrams the position of radiant energy on the electromagnetic spectrum and describes several means of detecting radiant energy. Explains the operation of a radiometer, and illustrates the use of a thermister, thermocouple, and thermophile in detection of radiant energy.

15887. The house fly (16:31)

Date:
1958
Summary:
Describes the houselfy as a carrier of germs and diseases. Shows the structure of the housefly through microscopic photography and animation. Depicts the life cycle of the fly and its breeding places. Discusses sanitation procedures necessary to control the housefly menace.

15888. Hormonal coordination 2 : the thyroid and parathyroid (30:31)

Date:
1962
Summary:
A credit course in The New Biology, a presentation of Learning Resources Institute, Columbia Broadcasting Systems, in conjunction with the American Institute of Biological Sciences. The course is planned to include the results of recent research findings in the biological sciences and to reflect the recommendations of professional organization interested in biology education. This installment discusses the thyroid and parathyroid glands.

15889. How machines help us (13:02)

Date:
1962
Summary:
Introduces basic principles of the lever, wheel and axle, pulley, inclined plane, wedge, and screw, and shows common usage of each. Shows the crowbar as a lever, and shows a doorknob as an example of a wheel and axle. Pictures the raising of the flag to illustrate the use of a pulley. Shows stairs as an example of an inclined plane, pictures carpenters driving nails as wedges, and presents the operation of an auto jack as an example of a screw.

15890. How seeds are scattered (10:27)

Date:
1957
Summary:
Illustrates and explains the many different ways in which seeds are dispersed--by animals, by the wind, and by water. Points out that only a very few live to grow into plants.

15891. Home cookery of fish (11:31)

Date:
1946
Summary:
With close-up photography of cod fillet, habibut steak, and whole dressed white fish, demonstrates three basic methods for cooking fish at home, boiling, and baking. Illustrates the use of garnishes to give eye-appeal and added nutritive qualities to fish when it is served.

15892. High temperature research (18:24)

Date:
1963
Summary:
Describes various phases of high temperature research, giving examples of compounds being used, goals of the research, and some results to date. Discusses procedures being used, with emphasis on procedures with titanium sulfide.

15893. Great Lakes area: men, minerals, and machines (15:03)

Date:
1963
Summary:
Shows how large deposits of iron ore, coal, and cheap water transportation contributed to the creation of a large industrial complex in the Great Lakes region. Pictures large scale mining of taconite in the Mesabi range of northern Minnesota. Shows ore boats on the Great Lakes, coal mining operations in West Virginia, a steel mill in Indiana, and the forming of automobile bodies in Detroit.

15894. The price of freedom (14:52)

Date:
1942
Main contributors:
Keech, Kelvin, 1895-1977
Summary:
This film "outlines the role that industry is playing in our war effort. Production of munitions and the operation of the payroll withdrawal plan for War Bonds are among the subjects treated." (Free Film Reviews, Movie Makers, January, 1943, 34.) Includes footage from a number of International Harvester factories and how the company's workers save money from their paycheck to help the war effort through a company-wide payroll savings plan.

15895. Photography fights (13:36)

Date:
1944
Main contributors:
Quackenbush, Robert S., 1904-1985
Summary:
Dramatization showing how Navy photographers and photographic interpreters provided the intelligence necessary to launch a strike against a Japanese airfield in the Solomon Islands. Ends with a statement by Commander R.S. Quackenbush, Jr. urging viewers to purchase war bonds.

15896. The thousand days (21:16)

Date:
1943
Main contributors:
Norrish, B. E. (Bernard Easterbrook), 1885-1961
Summary:
Describes the Canadian effort in World War II including news footage of Churchill addressing the Canadian Parliament, the building of the Alaska-Canada Highway, and Canadian tank and aircraft production.

15897. Story of a transport (20:58)

Date:
1945
Main contributors:
United States. Coast Guard
Summary:
Reviews the World War II service of the transport "Wakefield," formerly the liner "Manhattan"; shows it being used for the transportation of troops, bombed at Singapore, and burned in the Atlantic.

15898. Out of bed into action (15:36)

Date:
1944
Main contributors:
United States. Army Air Forces. First Motion Picture Unit
Summary:
This film outlines the convalescent training program for hospitalized U.S. airmen in World War II. It is designed to acquaint the convalescent with the program in which he will take part. Patients are shown in their beds, doing light calisthenics in the wards, exercising specific muscles using specially designed equipment, exercising and playing games out-of-doors, and engaging in hobbies and crafts. Other aspects of the program involve convalescents sharing wartime experiences with their fellow patients, teaching them new material and new skills, brushing up on their old skills acquired on duty, taking courses, and even earning degrees. The program also includes updates and discussions on the war, watching duty-related films, and engaging in purely social activities. The circulation and blood supply to various parts of the body are shown in animation.

15899. How honest are you? (14:16)

Date:
1950
Summary:
Bob returns to the basketball locker room for the whistle needed in practice. Don sees Bob searching Ben's pockets and tells the gang that Bob is a thief. At skill practice Coach Barker, in questioning the boys, brings them to realize that jumping at conclusions is dangerous, and that good intentions are not the same as truth.

15900. Housing in Scotland (14:52)

Date:
1945
Summary:
Shows examples of permanent and temporary houses planned by the Scottish Housing Advisory Committee and based on opinions of service men and women, and factory workers during World War II.