File:Listening Ears - geograph.org.uk - 166.jpg
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Listening_Ears_-_geograph.org.uk_-_166.jpg (640 × 480 pixels, file size: 44 KB, MIME type: image/jpeg)
Captions
Captions
Listening Ears
Summary
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| Description |
English: Listening Ears These are concrete listening ears built in the 1930s (before World War 2). Airplanes flying across the channel could be heard by observers positioned near these "ears". Whilst they worked when the wind was favourable, the speed of sound v the speed of aircraft meant that they gave only a few minutes notice of impending attack. Annecdotally it was said that observers could hear the "Golden Arrow" train leaving Calais. They were made redundant with the advent of radar in 1938. |
| Date | Unknown date |
| Source | From geograph.org.uk |
| Author | Paul Russon |
| Attribution (required by the license) | Paul Russon / Listening Ears / |
| Camera location |   | View this and other nearby images on: OpenStreetMap |  |
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| Object location | | View this and other nearby images on: OpenStreetMap | |
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_heading:225.00&language=en){kind=link}
Licensing
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This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by Paul Russon and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
Attribution: Paul Russon
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:50, 3 December 2009 | | 640 × 480 (44 KB) | GeographBot (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=Listening Ears These are concrete listening ears built in the 1930s (before World War 2). Airplanes flying across the channel could be heard by observers positioned near these "ears". Whilst they wo |
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