Blackouts?

Title: Blackouts?
Subject: en Imagined technology & prototypes; en Trivialization (performances and fairs)
Article Title and/or Image Caption: Blackouts? - Value questioned by lighting expert
Language: eng
Temporal Coverage: World War II
Date Issued: 1941-11-01
Is Part Of: Scientific American, v. 165, n. 5, 1941
pages: 250
Rights: Public domain
Archived by: Stefano Furi