Vibrations

Duration: 22

Genre: Educational

Year Published: 1961

Creator: Encyclopaedia Britannica Educ Corp

Format: 16mm

Color: B&W

Sound: sound

Description: Defines vibrations explaining both causes and effects with emphasis on vibrations producing sound. Pictures a boy on a trampoline and illustrates examples of seeing, feeling, and hearing vibrations. Diagrams vibrations in a tuning fork and illustrates the need for air in transmitting sound. Shows a bass string and a dog whistle and points out the frequency differences. Reveals natural frequency through sympathetic vibrations using tuning fork and guitar string.

Complete Record: Defines vibrations explaining both causes and effects with emphasis on vibrations producing sound. Pictures a boy on a trampoline and illustrates examples of seeing, feeling, and hearing vibrations. Diagrams vibrations in a tuning fork and illustrates the need for air in transmitting sound. Shows a bass string and a dog whistle and points out the frequency differences. Reveals natural frequency through sympathetic vibrations using tuning fork and guitar string., NOTE: Two (or more) records have been merged together to create this data.