Vertical Lighthouse Beams

Title (Dublin Core): Vertical Lighthouse Beams
Subject (Dublin Core): en Technology; en Airplanes and Zeppelins; en Communication
Article Title and/or Image Caption (Dublin Core): Vertical Lighthouse Beams; Caption: The Latest Idea in Lighthouses-Vertical Shafts of Light Instead of the Old Horizontal Beams Which Were Often Not Visible at All In Foggy Weather. Vertical Lighthouse Beams Have Been Seen 100 Mlles Away-the Maximum Range of the Old Style Beacon Is About 25 Miles.
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): interwar period
Date Issued (Dublin Core): 1920-01
Is Part Of (Dublin Core): Electrical Experimenter, v. 7, n. 9, 1920
pages (Bibliographic Ontology): 867, 928-930
Rights (Dublin Core): Public domain
References (Dublin Core): United States of America; Sandy Hook; Cape Mendocino; California; Alexandria; New York City
Archived by (Dublin Core): Mikhail Vsemirnov; Alberto Bordignon (Supervisor)