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The concrete blocks that once protected Britain

7 Jan 2019

An interesting article from the BBC for all of you studying WW1!

More than 100 years ago acoustic mirrors along the coast of England were used to detect the sound of approaching German zeppelins.

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.

BBC News

Related Wildgoose resources:

WG7330 - World War One Timeline

WG7102 - Remembrance Day Pack

WG7362 - Battle of Britain Poster

LT1215 - Poets of WW1 Poster




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