SOUND RECORDING AND REPRODUCTION
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This film describes how sound is converted into light rays to produce sound motion pictures and how the projector is able to change the light rays back into sound waves. We learn from the film how the two great systems operate, sound recording by variable area and sound recording by variable density. The film ends with visualizations of sound as it appears by both systems.
Complete catalog record
Series: Physical science series
Dewey number: 534
Audience level: sh-c-trade-adult Guide 15c
Format/cost: 16-sd-$50
Distributors / rental: Not shown in source
Dewey number: 534
Audience level: sh-c-trade-adult Guide 15c
Format/cost: 16-sd-$50
Distributors / rental: Not shown in source
More in Physical Science Series
- The Earth's rocky crust. 1931
- LIGHT WAVES AND THEIR USES 1937
- Distributing heat energy. 1938
- Fuels and heat. 1938
- The wearing away of the land. 1938
- THERMODYNAMICS 1938
- SOUND RECORDING AND REPRODUCTION 1943
- Electric Currents And Circuits 1985
- Electricity And Magnetism 1985
- Eletricity And Magnetism 1985
- Heat and Energy Transfer 1985
- Static And Current Electricity 1985
Related films
Sources
- Educational Film Guide 1946 — title, year, creator, length, format, sound, description, catalog record
Record added 2026-07-02 14:42:44