3 Season
18 Episode
The Secret Life of Machines - Season 2 Episode 5 The Secret Life of the Radio Set
Any electrical spark creates radio waves and acts as a transmitter. You hear sparks on a radio as interference. That's why lighting makes radios crackle, and even the tiny spark in a switch is enough to make a noise on the radio when turning on a light. Episode Contents: Models: Toilet tube crystal set. Machines: Lovely little (1 metre long) RC car made by Rex for kids show. Guests: A Hertz induction coil and loop reciever. Early Marconi radios. Antique BBC transmitter (c.1920) and it's modern equivalent. Various antique sets and accessories. Films: The cartoon life of young Marconi and an old Armstrong. An ad for 1950 plastic RCA portables. Extro: Motorized novelty radios.
- Year: 1993
- Country:
- Genre: Documentary
- Studio: Channel 4
- Keyword: invention, engineering, educational, machine
- Director: Tim Hunkin
- Cast: Tim Hunkin, Rex Garrod
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