File:Vacuum Tubes - U.S. Army training film (1943).webm
Original file (WebM audio/video file, VP9/Opus, length 13 min 14 s, 960 × 720 pixels, 745 kbps overall, file size: 70.49 MB)
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Summary
[edit]DescriptionVacuum Tubes - U.S. Army training film (1943).webm |
English: Vacuum Tubes, Official War Department Training Film 1-471 |
Date | |
Source | YouTube: Vacuum Tubes - The Triode & The Multipurpose Tubes - 1943 US Army Training Film – View/save archived versions on archive.org and archive.today |
Author | United States Army Signal Corps |
Licensing
[edit]Public domainPublic domainfalsefalse |
This file is a work of a U.S. Army soldier or employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 01:41, 18 August 2022 | 13 min 14 s, 960 × 720 (70.49 MB) | Nosferattus (talk | contribs) | Imported media from https://www.youtube.com/watch?v=99OUg5_WCn8 |
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