Author: Surfer Jerry


Posted on: 27th October 2008

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Category: Machines, Space

Sound mirrors were built by the Royal Engineers from 1916 to the 1930’s. The sound mirrors were part of an extensive Zeppelin and enemy aircraft detection system that was built down the east coast of Britain during the First and Second World Wars.
The sound of an approaching aircraft was reflected off the concave [...]

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Author: Surfer Jerry


Posted on: 17th August 2008

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Category: Space, Travel

This is the new raised runway at the airport in Madeira Portugal.

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