The concrete blocks that once protected Britain, in photographs

websiteThe BBC has highlighted how more than 100 years ago acoustic mirrors along the coast of England were built with the intention of using them to detect the sound of approaching German zeppelins, while their development continued until the mid-1930s when radar made them obsolete, and now the remaining structures have been documented in a series of photographs.

The BBC writes:

The concave concrete structures were designed to pick up sound waves from enemy aircraft, making it possible to predict their flight trajectory, giving enough time for ground forces to be alerted to defend the towns and cities of Britain. Invented by Maj William Sansome Tucker and known as sound mirrors, their development continued until the mid-1930s, when radar made them obsolete.

Joe Pettet-Smith set out to photograph all the remaining structures following a conversation with his father, who told him about these large concrete structures dotted along the coastline between Brighton and Dover. ‘When I was a child my father told me stories about my grandfather and his involvement in radar,’ says Pettet-Smith.

‘One of his recurring jokes has always gone along the lines of: ‘It’s not rocket science, I should know, my Dad was a rocket scientist.’

… He said: ‘I began to think more and more about the relationship between art, science and the creative process… The science was solid, but aircraft kept getting faster and quieter, which made them obsolete.’

Pettet-Smith used an old wooden large format plate camera to record the structures, partly because he wanted to use technology that was around at the time…

‘Some of the structures were removed by local councils; many more were planned but never built. This series is a celebration and a cataloguing of all the remaining examples,’ he said.

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