881. Gravity : the mighty pull (13:43)

Date:
1960
Summary:
Explains the basic principles of gravitational attraction that relate to the earth, and other planets, and the sun. Relates these principles to flights of rockets and artificial satellites and includes the experiments on weightlessness that is encountered by astronauts. Gives a number of practical examples from everyday life and explains the role of gravity in these situations. Concludes with three questions for children to solve.

882. Scraping flat surfaces (13:54)

Date:
1942
Summary:
Shows how surface plates are used to check the flatness of surfaces, types of scrapers, how to remove high spots, and how to determine when a surface is scraped flat.

883. North of the Arctic Circle : Summer in Northern Norway (21:05)

Date:
1956
Summary:
Describes the culture of the people and the unusual climate of northern Norway. Explains that the northern third of the country is within the Arctic Circle but that the climate is much modified by the Gulf Stream. Depicts the splitting of the country into two distinct climates by a central mountain range. Views many of the geographic features peculiar to Norway.

884. The senses of man (18:15)

Date:
1964
Summary:
Conversion of external stimuli (light, sound, odor, touch, and taste) into nerve impulses by one or more sensory receptors in the body is shown through animation. Explains how these receptors provide information about the state of the inner organs.

885. Islands of the frozen sea (29:41)

Date:
1959
Summary:
Deals with the geography and climate of the Queen Elizabeth Islands in the Arctic through a one-year cycle and pictures life among its flora and fauna. Reconstructs the climatic history of the region from reports of early explorers and documents evidence of an early tropical climate in coal seams and fossil finds. Surveys the plant and animal life. Highlights the vigorous and intense growth of plants and young animals during the brief summer and emphasizes the delicate balance which exists among all plants and animals. Disproves some of the misconceptions about the Arctic and theorizes about the origin and development of the ice-cap. Explains the possibilities of colonization of the region.

886. The ice frontier (29:10)

Date:
1956
Summary:
Discusses the "Ice "Frontier," the North Polar region separating America and Russia. Presents the historical background and geographical significance of this area from the days of the early Russian explorations on the West Coast of America to the present day when the Arctic may well be the crossroads of world airplanes and, someday, the route of guided missiles in a Cold War turned hot. Describes strategic military emplacements, experiments, and explorations which are all part of the current activity that makes the "Ice Frontier" an area of significance in a world of political and ideological conflicts. (Center for Mass Communication) Film.

887. The mental hospital volunteer : someone who cares (28:24)

Date:
1955
Summary:
Depicts the role and influence of the mental hospital volunteer in the lives of hospitalized mental patients. Alludes to the scope of the problem of mental illness, and describes some of the undesirable conditions in mental hospitals, the needs of mental patients, the varied activities of a volunteer program, and the process of orienting and training new volunteers. The longer version refers to the Indiana Mental Health Association and the nine mental hospitals in Indiana and includes a direct appeal for volunteers by a former patient.