Electric ears

Dublin Core

Title

Electric ears

Subject

World War, 1914-1918--Technology--Airplanes

Description

Article title "Aerial defenses of Paris"
Caption "This Detector, which consists of four megaphones connected with a microphone and equipped with receivers is used day and night: with it the purr of an aerial engine may be heard while the machine itself is invisible"
Cover image title "Electric ears detect invading air craft"

Source

https://archive.org/details/PopularMechanics1916/page/n83
https://archive.org/details/PopularMechanics1916

Date Issued

1916-01

Language

en

Bibliographic Citation

Popular Mechanics Magazine, v. XXV, n. 1, 1916, cover and p. 34

Rights

Public Domain

Still Image Item Type Metadata

Original Format

Printed drawing

Citation

“Electric ears,” War of Wonders, accessed 23 gennaio 2019, http://warofwonders.com/items/show/115.

Item Relations

This item has no relations.

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