The general principles of the radio receiver are explained, and the following points treated in detail: the problem of tuning; the capacity of a variable condenser; the inductance of a coil; resonance; detection, and how a crystal is used as a detector; the operation of an earphone; the production of audible sound waves.
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How to watch
Collection
In ACMI's collection
Credits
Collection metadata
ACMI Identifier
008988
Language
English
Subject categories
Advertising, Film, Journalism, Mass Media & TV → Radio - Receivers and reception
Advertising, Film, Journalism, Mass Media & TV → Radio frequency
Advertising, Film, Journalism, Mass Media & TV → Radio waves
Communications, Infrastructure, & Transport → Radio waves
Educational & Instructional → Instructional
Mathematics, Science & Technology → Radio waves
Sound/audio
Sound
Colour
Black and White
Holdings
16mm film; Access Print (Section 1)