Sound mirrors
The sound mirrors at Denge Kent , where built before the development of Radar. The sound mirrors were intended to provide early warning of enemy aeroplanes (or airships) approaching Britain. They did work, but the development of faster aircraft made them less useful, as incoming aircraft would be within sight by the time they had been located. Increasing ambient noise made the mirrors harder to use successfully, Eventually, radar rendered acoustic detection redundant. There are three different designs of sound mirror at Denge. They are the 200ft long mirror, plus 20ft. and 30ft diameter mirrors.
Size: 5200px × 3455px
Location: Denge Kent
Photo credit: © Eugene Kiernan / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: concrete, defense, denge, experiment, experimental, mirror, mirrors, pre, radar, sound, war
