Mechanics and electronics
Baird used a spinning disc with holes in it, and the picture had 30 lines. As a young man, Farnsworth worked out how to capture and display a picture electronically, line by line, using an electron beam. CRT screens worked this way until flat displays took over.
The evolution of the screen
- 1936Regular broadcasting in London
- 1954Colour television in the US
- 1956Television broadcasting from Bratislava
- 2000sFlat LCD and plasma screens
- 2013OLED TVs go on sale
- 2020sSmart TVs and streaming services
Television and the internet
Younger people mostly watch YouTube and streaming services. The TV set has become a large internet-connected monitor, and it often collects data about what you watch.