An elementary description of the emission and use of sound waves for distant communication, and the early telephone invented by Alexander Graham Bell. The progress of modern telephones and speech amplification are also included in this film.
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Collection
In ACMI's collection
Credits
Collection metadata
ACMI Identifier
013950
Language
English
Subject categories
Communications, Infrastructure, & Transport → Communications - History
Communications, Infrastructure, & Transport → Telecommunication systems - History
Communications, Infrastructure, & Transport → Telephone - History
Documentary → Documentary films - Great Britain
Educational & Instructional → Educational films
Mathematics, Science & Technology → Bell, Alexander Graham, 1847-1922
Sound/audio
Sound
Colour
Black and White
Holdings
16mm film; Access Print (Section 1)