Follow the white rabbit: Today we went to see the Sound Mirrors at Denge…
Posts Tagged ‘Denge’
White rabbit at Denge
Tuesday, August 10th, 2010Denge open day pictures
Wednesday, July 21st, 2010Lots of good pictures are appearing on Flickr after the 18 July 2010 open day at the Denge sound mirrors (click to see Richard Fisher’s picture in full):
Feel free you add your photos to the Sound Mirrors Pool.
Photos of 2004 Denge sound mirror guided walk
Monday, May 24th, 2010Hywel Williams took some photographs on a guided walk to the Denge sound mirrors on 4 August 2004: Denge Sound Mirrors - “The Listening Ears”.
I could hear the little steam train pass across in front of me off the sound mirror, GREATLY magnified in sound and apparently in the mirror direction it was traveling. Clearly not a demonstration of aeroplane detection, but also a clear demonstration that these concrete mirrors still work, nearly 80 years after their experimental construction!
Ooo, I’m in one of the photos!
Hywel also has a rather good site about Disused stations on London’s Underground.
Conservation techniques and the Denge sound mirrors
Sunday, May 16th, 2010… One of the largest projects funded by the Aggregate Levy Sustainability Fund and managed by English Heritage was concerned with stabilizing these structures and undertaking research into their repair.
This paper aims to outline the conservation approach to the project and to detail the concrete repair techniques trialled. It also highlights some pointers for the repair of twentieth-century concrete based on the advice of a master mason and a concrete repair contractor. Finally, the long-term monitoring that is in place for the carbonation inhibitors and cathodic protection systems that are installed on these structures are detailed.
The Listening Mirrors - A Conservation Approach to Concrete Repair Techniques by Alan Wright and Peter Kendall. Journal of Architectural Conservation, Volume 14, Issue 1, March 2008
Denge sound mirrors from the air
Thursday, April 22nd, 2010
Ian Ballard has photographed the Denge sound mirrors from a light aircraft.
Denge mirrors at Exploring Kent’s Past
Friday, April 16th, 2010“Acoustic Sound Mirrors at Greatstone-on-Sea, Lydd” at Kent County Council’s Exploring Kent’s Past.
The remains of three large concrete structures, formerly an anti-aircraft Acoustic Detection installation. Microphones were attached to the three reinforced concrete structures in order to pick up the sound of approaching enemy aircraft. The smallest ’sound mirror’ was found to be fairly ineffective so it was superseded by a larger dish, 12 m in diameter. This in turn was replaced by a 70m long ’sound wall’. The structures were built by the RAF between 1930-4. They were rendered obsolete by the introduction of radar in 1935, and by advances in aerial technology.
Source: Exploring Kent’s Past
Kent History Forum photos
Friday, April 9th, 2010Sound mirrors on the Kent History Forum. There is lots of other good stuff on the site, too.
- Abbot’s Cliff. Including an aerial photo.
- Denge.
on the last official walk … there was round 300 hundred of us
. - Fan Hole, near Dover.
- Hythe.
- Joss Gap (Kingsgate).
Joss bay had two sound mirrors one being a slab, this was cut into the cliff near by the castle keep hotel , now replaced by flats.a slight indentation can still be seen near the top of the cliff. Checking the site where the round mirror was, which was a timber frame rendered. a few years ago the telephone cable blocks were still in place.
- Warden Point. With a good 1978 photo of it about to go over the cliff.
2010 guided walks to the Denge sound mirrors
Sunday, March 21st, 2010Likely dates for public access to the Denge mirrors have been announced on the website of the Romney Marsh Countryside Project. Remember, this is the only way to visit the Denge mirrors.
SUMMER 2010 VISITS TO THE SOUND MIRRORS
The sound mirrors are only accessible on one of our guided tours and we have been leading free tours out to the Sound Mirrors for 13 years now. They are on an island, connected by a locked swing bridge on a private gravel workings (owned by CEMEX). The dates for 2010 have yet to be published in our booklet, however they are most likely to be as follows: An Open day from 10 am to 5 pm on Sunday 18th July Guided walks starting at 2 pm on Sunday 8th August and Sunday 26th September. The walks and the Open Day are free of charge and there is no need to book, although we do ask for a donation. The meeting point will be at Lade car park on Coast Drive (half way between the Pilot Pub and Romney Sands) (TR 085 208). Please contact us for more information if needed. Tel: 01797 367934 Fax: 01797 367934
2010-03-10 15:34:57
People planning to join these walks should obviously confirm details with the RMCP before travelling.
Hythe and Denge photos
Sunday, September 6th, 2009Aerial view of Denge sound mirrors
Sunday, August 9th, 2009An aerial photograph of the sound mirrors at Denge. Just how close these structures were to disappearing into the flooded mineral extraction workings can be clearly seen
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