Unsichtbare Brücken (1932)
In the broadcasting center of a radio station, visitors are informed in a kind of educational course about how "electric waves" are generated and how they are converted into sounds that can then be heard on the radio.
- Released
- 1932-08-18
- Genres
- Documentary
- Runtime
- 40 min
- Status
- Released
- Directed / written by
- Hans Fritz Wilhelm
Cast
More like this
- Above Majestic (2018)
- Avatar: The Deep Dive - A Special Edition of 20/20 (2022)
- Elstree 1976 (2015)
- Marvel Studios Assembled: The Making of Hawkeye (2022)
- Capital in the Twenty-First Century (2019)
- The Secret (2006)
- Ex Libris: The New York Public Library (2017)
- A Toxic Love Story (2026)
- The Curse of the Dragon (1993)
- The Mole: Undercover in North Korea (2020)
- Directed by John Ford (1971)
- Come See Me in the Good Light (2025)