Air-Operated Siren Gives Air Raid Warnings
Item
Compressed air is used in a siren developed at the Bell Telephone laboratories to give it a powerful wail. Placed on the Manhattan bridge in New York City to test its ability as an air raid siren, it sent out a shriek that was heard as far away as the Battery.
- Title (Dublin Core)
- Air-Operated Siren Gives Air Raid Warnings
- Article Title and/or Image Caption (Dublin Core)
- Air-Operated Siren Gives Air Raid Warnings
- Language (Dublin Core)
- Eng
- Temporal Coverage (Dublin Core)
- World War II
- Date Issued (Dublin Core)
- 1942-06
- Is Part Of (Dublin Core)
-
Popular Mechanics, vol. 77, n. 6, 1942
- pages (Bibliographic Ontology)
- 32
- Rights (Dublin Core)
- Public domain
- Source (Dublin Core)
- Google books
- Archived by (Dublin Core)
- Enrico Saonara
