JMB1943 Posted 7 January , 2019 Share Posted 7 January , 2019 On bbc.com today there is a series of about a dozen photos of concrete sound mirrors. These were built in Britain during the GW to try to detect the approach of Zeppelins before they arrived. Made of concrete, they apparently ranged in size from 20 ft to 200 ft. Regards, JMB Link to comment Share on other sites More sharing options...
Moonraker Posted 7 January , 2019 Share Posted 7 January , 2019 Previous thread of 2014 re BBC World War One at Home series with some good photos. Moonraker Link to comment Share on other sites More sharing options...
Terry_Reeves Posted 7 January , 2019 Share Posted 7 January , 2019 The subject has been discussed a number of time on the forum: https://www.greatwarforum.org/search/?q=sound mirrors TR Link to comment Share on other sites More sharing options...
JMB1943 Posted 7 January , 2019 Author Share Posted 7 January , 2019 Yes, it has been discussed several time previously. The reason for my posting the topic is that photos of about one dozen different mirrors are shown, compared to the photos of only two mirrors shown in all of the earlier multiple, extensive discussions. Regards, JMB Link to comment Share on other sites More sharing options...
mandy hall Posted 7 January , 2019 Share Posted 7 January , 2019 I saw this article today and discovered there is one of these mirrors, not far from me. I intend to be nosey and have a look later this week. Mandy Link to comment Share on other sites More sharing options...
Dai Bach y Sowldiwr Posted 7 January , 2019 Share Posted 7 January , 2019 Here's the link: https://www.bbc.com/news/in-pictures-46348917 Link to comment Share on other sites More sharing options...
depaor01 Posted 7 January , 2019 Share Posted 7 January , 2019 Saw that today. He uses large format film to make the images. Impressive. Link to comment Share on other sites More sharing options...
NigelS Posted 7 January , 2019 Share Posted 7 January , 2019 My understanding is that the three at Denge - certainly the 200ft one - were the final evolution of the technology, being constructed post Great War. There has been at least one reconstruction shown on TV (here's one https://www.youtube.com/watch?v=84nK-M_40Uk ) using one of the mirrors with a light aircraft as the 'target' & modern day audio equipment for sensing, to prove the technology worked. Made obsolete by the increasing speed of aircraft which meant they arrived overhead too soon after the initial detection, and, more significantly, the advent of radar. NigelS Link to comment Share on other sites More sharing options...
mandy hall Posted 9 January , 2019 Share Posted 9 January , 2019 The sound mirror at Selsey today looking very sad, it was converted into a house in the 1930s. Mandy Link to comment Share on other sites More sharing options...
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