Invisible rays

Item

Title
Invisible rays
Subject
en Technology
en Other
Article Title and/or Image Caption
Invisible rays - Make war maps, charts, instruments visible
Contributor
E. W. Beggs (author)
Language
eng
Temporal Coverage
World War II
Date Issued
1943-01-01
pages
28-29
Rights
Public Domain
References
Westinghouse lighting
Archived by
Stefano Furi
Media
rays.JPG