At the weekend I went to see some new sound mirrors in a park at Kew in west London.
Tags: Kew
At the weekend I went to see some new sound mirrors in a park at Kew in west London.
Tags: Kew
This entry was posted on Tuesday, April 17th, 2012 at 20:16 and is filed under Individual mirrors, Sound mirrors. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.
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 incoming enemy aircraft.
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