Blackout Bulb Sheds Downward Beam of Soft Blue Light
Item
Silvered inside to provide a downward beam that cannot be seen from outdoors, a new blackout bulb offers soft illumination for the home during air raids. The 25-watt bulb is covered with a black silicate coating to prevent light leaks, and its tip is dark blue, shedding a blue light.
Title (Dublin Core)
Blackout Bulb Sheds Downward Beam of Soft Blue Light
Subject (Dublin Core)
en
Technology
Article Title and/or Image Caption (Dublin Core)
Blackout Bulb Sheds Downward Beam of Soft Blue Light
Language (Dublin Core)
Eng
Temporal Coverage (Dublin Core)
Date Issued (Dublin Core)
1942-05
Is Part Of (Dublin Core)
pages (Bibliographic Ontology)
65
Rights (Dublin Core)
Public domain
Source (Dublin Core)
Archived by (Dublin Core)
Enrico Saonara