In 1820 Oersted discovered that a wire carrying an electric current has a magnetic filed which varies in accordance with the variations of the current. From this discovery the telegraph was developed; the Trans-Atlantic cable laid; the discovery of the telephone; and the advent of the radio. The cable and radio link should be supplemented by signals from satellites - thus the communication network is gradually encompassing the world.
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How to watch
Collection
In ACMI's collection
Credits
Collection metadata
ACMI Identifier
320914
Language
English
Subject categories
Advertising, Film, Journalism, Mass Media & TV → Radio
Advertising, Film, Journalism, Mass Media & TV → Radio - History
Communications, Infrastructure, & Transport → Telegraph lines - Design and construction
Communications, Infrastructure, & Transport → Telephone
Communications, Infrastructure, & Transport → Telephone - History
Communications, Infrastructure, & Transport → Telephone cables
Mathematics, Science & Technology → Discoveries (in science)
Mathematics, Science & Technology → Electrical currents
Mathematics, Science & Technology → Magnetic fields
Mathematics, Science & Technology → Satellites
Sound/audio
Sound
Colour
Black and White
Holdings
16mm film; Access Print (Section 1)