http://www.artificialowl.net/2009/03/abandoned-acoustic-mirrors-denge-uk.html Before World War II and the invention of radar, acoustic mirrors were built as early warning devices around the coasts of Great Britain, with the aim of detecting incoming enemy aircraft by the sound of their engines. The most famous of these devices still stand at Denge on the Dungeness peninsula and at Hythe in Kent. Other examples exist in other parts of Britain (including Sunderland
Denge sound mirrors Sound Mirrors - Andrew Grantham
http://www.andrewgrantham.co.uk/soundmirrors/locations/denge/ WebSep 15, 2016 · RSPB Dungeness: Acoustic Mirrors Dungeness - See 121 traveller reviews, 74 candid photos, and great deals for Dungeness, UK, at Tripadvisor. how diwali started
Denge Sound Mirrors - YouTube
WebApr 12, 2016 · The design is a direct copy of the 200 foot mirror at Denge, near Dungeness in Kent. Minor differences include small projecting buttresses at the foot of the mirror face, which were found to harm its performance. The electrical equipment was installed in the first weeks of September 1935, and testing was undertaken on 23 … http://www.everythingiselectric.com/malta/il-widna-maghtab.html WebEarly warning sound mirrors A forerunner of radar, acoustic mirrors were built on the south and northeast coasts of England between about 1916 and the 1930s. The ‘listening ears’ were intended to provide early warning of … how djs act