Kilnsea Acoustic Mirror 05-03-2006 15-40-51

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	pixell says: Looks interesting, I have never seen this before. Do you know anything about it? Posted 30 months ago. ( permalink )
	Jonathan Fry says: Hi Baz, It's a World War 1 Acoustic Mirror located in a field at the edge of the Beacon Lagoons Nature Reserve at Kilnsea. The Acoustic Mirror is like an early day radar system. During WW1 war planes travelled relatively slowly and because of this there was a time delay between hearing them and seeing them. On the image you can see a corroded metal pole placed in front of the concrete mirror. On the end of this pole a microphone was placed. The operator sat behind the structure and listened through headphones for the sound of enermy aircraft being focused by the mirror onto the microphone. The mirror is facing the sea but apparently set back from the sea by a few hundred yards to prevent the sound of the waves being focused by the mirror and drowning out the sound of the planes. This 'technology' was soon obsolete as the aircraft became faster and could then be seen before being heard. All of the images of yesterday's outing are viewable here - gallery.hull-online.co.uk/East+Yorkshire/coas tal+defences/ If you are interested in visiting, and it's well recommended, let me know and I'll email you the OS grid reference / GPS coordinates and the best route in by foot. Jon Posted 30 months ago. ( permalink )
	Jonathan Fry says: For anybody interested in visiting the acoustic mirror I've added some further information, directions and a map here - history.hull-online.co.uk/2006/03/07/kilnsea- acoustic-mir... Jon Posted 30 months ago. ( permalink )
	Steve Roe says: You did better than me: More information is here: www.ajg41.clara.co.uk/mirrors/kilnsea.html Posted 29 months ago. ( permalink )
	Jonathan Fry says: But you got to Spurn Steve and we have that to do, possibly in a month or so. I've had a look through your entire Spurn photostream and have noted some points of interest for us to look at. Posted 29 months ago. ( permalink )

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Taken with a Camera DC3306.
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Taken on March 5, 2006

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Kilnsea Acoustic Mirror 05-03-2006 15-40-51

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