WW1 Sound Mirror
Introduction
The photograph on this page of WW1 Sound Mirror by Mick Garratt as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk
WW1 Sound Mirror
Image: © Mick Garratt Taken: 3 Nov 2017
Built during the first world war to detect incoming airships. The Hyperbolic dish in the 4½m cast slag concrete structure concentrates sound to a point where it would be picked up by a microphone.
Images are licensed for reuse under creativecommons.org/licenses/by-sa/2.0
Image Location
Latitude
54.561532
Longitude
-0.836272