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Inventions That Changed the World - Season 1 - Episode 4 - The Telephone
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Watch Series: Inventions That Changed the World Released in (2004) - Season 1 - Episode 4 ,airing date 2004-02-06 produced by UK, The TV Series categorized in Documentary, and content rating 5h with duration 60 min broadcasted as these networks BBC Two, Streamed at Putlocker & directed by Neil Ferguson, Ingrid Kvale, Peter Leonard. At the time of Alexander Graham Bell and Thomas Watson's first successful telephone transmission in 1875, the only wires strong enough to be strung over long distances were made of iron. Iron wires had been used for telegraph systems but they were unsuitable for long-distance telephone links. But, in 1877, an American, Thomas Doolittle, developed a method of manufacturing copper wires strong enough to be strung between telegraph poles. Copper's superior conductivity preserved the integrity of the telephone signal to an extent that iron could not. The age of mass communications was born.
Genre: Documentary
Actor: Jeremy Clarkson, Richard Fleming, Michael Lutz, James Mellor, Robin Sebastian, John Strange, Walter Bingham, Simon Lawrence, Russell Layton, Alun Maxwell
Creators: Neil Ferguson, Ingrid Kvale, Peter Leonard
Country: UK
Languages: en, English,
Episode: 4
Runtime: 60
Date Modified: 2018-02-06 00:03:21
Air Date: 2004-02-06
Year Released: 2004
Rating: 8.500 out of 10
Content Rating: 5h
Views: 98
Quality: HD
Networks:
BBC Two,
Inventions That Changed the World - Season 1 - Episode 4 - The Telephone Watch Online
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