The use of ultraviolet rays for secret signaling

Title (Dublin Core): The use of ultraviolet rays for secret signaling
Subject (Dublin Core): en Technology; en Communication
Article Title and/or Image Caption (Dublin Core): "Invisible" Light Signals
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): Interwar period
Date Issued (Dublin Core): 1919-08
Is Part Of (Dublin Core): Popular Science Monthly, v. 95, n. 2, 1919
pages (Bibliographic Ontology): 24
Rights (Dublin Core): Public domain (Google digitized)
Source (Dublin Core): Google Books
References (Dublin Core): United States Navy; Johns Hopkins University; United States Army Signal Corps
Archived by (Dublin Core): Davide Donà; Alberto Bordignon (Supervisor)
Spatial Coverage (Dublin Core): United States of America