# Learning About Sound (2nd Ed)

This 17-minute film presents the basics of sound beginning with it source – vibrations emitting sound waves. We visualize the sound waves with an oscilloscope showing amplitude and frequency. Tapping on a stretch of steel rail,we compare the speed sound travels in solid steel to the speed of sounds in air. Scenes explore both electronically synthesized musical sounds with acoustical instruments. The film concludes with ways of controlling noise pollution. Produced, written and directed by: Thomas G. Smith Academic collaborator: Albert V. Baez, Ph. D, Science education consultant to UNESCO Running time: 17 minutes

- Kind: Educational
- Year: 1974
- Runtime: 16 min
- By: Thomas G Smith
- Genres: Education
- Archive: [Internet Archive](https://archive.org/details/LearningAboutSound)
- Licence or status: none stated by the archive
- Who can watch: Kids profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/LearningAboutSound?play=1)