Original title
A Modern Aladdin's Lamp
Released
10/20/1940
Origin country
US
Genre
Documentary
Production companies
Audio Productions Inc.
Budget
—
Revenue
—
Runtime
0hr 22min
With Western Electric Vacuum Tubes in the starring roles, this film tells the fascinating story of tube development from the first crude bulbs of Edison and De Forest to the powerful and efficient tubes in use today, and shows the prominent part they play in radio, long-distance telephony, public address systems, sound motion pictures and the phonograph.
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