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Vacuum tubes were a very important creation in the history of electronics, as they played an integral role in the development of radios, televisions, telephones and many other technological advances. Although most of the applications that incorporated vacuum tubes eventually used transistor-based technology, vacuum tubes still hold footing in a lot of applications and their history is vital in the understanding of 20th century technology. Check out this film from the 1940s that shows a first-hand glimpse at vacuum tubes in their heyday! Table Of Contents: (1) Electronics At Work (1943) - An industrial film that scientifically explains electrical tubes. The film is full of footage of industrial machinery and military equipment that utilize these new tubes - 21 minutes
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