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STORIES  OF  INVENTIONS   AND  DISCOVERIES

Television

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Invented by: John Logic Baird, Vladimir Zworykin
Nationality: British, Russian, in America
Date: 1926, 1925-28
Purpose: to transmit moving pictures by "wire-less" waves
 
     John Logic Baird invented a mechanical system for transmitting moving pictures which he used for the world's first public television demonstration, in 1926. Baird's system was based on light passing through spinning perforated discs at both transmitter and receiver.
     Meanwhile, Vladimir Zworykin developed an electronic system based on a "gun" firing electrons at a coated surface within a ca­thode ray receiver tube to produce a picture. The principle was fur­ther developed by the RCA Company of America.
     Baird's mechanical system was used by the BBC, alongside the electronic system, in the world's first regular television service in 1936. The electronic system proved to be the best and Baird's system was abandoned.
    The first American television service began in 1939. Colour television  services started in America in  1951 and Britain in 1967.

   


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  Electric Light Bulb
 
Tape Recorder
(and Walkman)

Television

 

Telephone 2

Cameras  in the Beginning

Aqualung

The Radio
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