ARCHIVE FILM · 121895357

Vacuum Tubes - U.S. Army training film (1943).webm

Name: Vacuum Tubes - U.S. Army training film (1943).webm
Channel: United States Army Signal Corps
Description: Vacuum Tubes, Official War Department Training Film 1-471

Public domain

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Vacuum Tubes, Official War Department Training Film 1-471

Public domain

Rights evidence

Public domain

Suggested attribution
YouTube : Vacuum Tubes - The Triode & The Multipurpose Tubes - 1943 US Army Training Film – View/save archived versions on archive.org

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