Researched
Broadcasting & Television
Radio and television send one source to millions of receivers: for the first time shared news, culture and advertising for the masses.
Open in the interactive tree →KDKA in Pittsburgh started regular broadcasting on 2 November 1920, the BBC followed in 1922, and German entertainment radio began in 1923. Television with electronic cameras and tubes went into service in Britain and Germany in the mid-1930s and became dominant after 1950. Tubes amplified the weak antenna signals.
Prerequisites
- Sound Recording1877Radio programmes relied on recorded music and speech
- Cinema1895Television inherited moving-image conventions and production practice from cinema
- Radio (Wireless Telegraphy)1895
- Vacuum Tube (Triode)1906
Unlocks
- Earth observation by satellite1960TIROS-1 (1960) photographed clouds with TV cameras and radioed the images down
- Communications Satellites1962
- Video Games1972