ACOUSTIC MIRROR, KILNSEA, HOLDERNESS, E YORKSHIRE_DSC_5239_LR60
Between the World Wars, before the invention of radar, parabolic sound mirrors were used experimentally as early-warning devices by military air defence forces to detect incoming enemy aircraft by listening for the sound of their engines. Several are found in Kent, such as at Dungerness. This one is 4.5 metre high and the only listed building in Kilnsea, located near Kilnsea Grange, East Yorkshire, UK. The pipe which held the 'collector head' (microphone) can be seen in front of the structure
Please don't use this image on websites, blogs or other media without my explicit permission.
© rogerperriss@aol.com All rights reserved.
ACOUSTIC MIRROR, KILNSEA, HOLDERNESS, E YORKSHIRE_DSC_5239_LR60
Between the World Wars, before the invention of radar, parabolic sound mirrors were used experimentally as early-warning devices by military air defence forces to detect incoming enemy aircraft by listening for the sound of their engines. Several are found in Kent, such as at Dungerness. This one is 4.5 metre high and the only listed building in Kilnsea, located near Kilnsea Grange, East Yorkshire, UK. The pipe which held the 'collector head' (microphone) can be seen in front of the structure
Please don't use this image on websites, blogs or other media without my explicit permission.
© rogerperriss@aol.com All rights reserved.