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Amazing article on devices employed to reflect and concentrate sound waves. An experimentation...

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Sound Mirrors and Other Sensory Expansion Devices

Amazing article on devices employed to reflect and concentrate sound waves.

An experimentation on large scale acoustic mirrors has been run after WWI in Great Britain to detect incoming enemy aircrafts taking off on the other side of the English Channel.

By enhancing the sound of enemy aircraft’s engines, the mirrors would have enabled the British defense to detect incoming airplanes fifteen minutes before they were visible.

As you can see, the article focuses on the period between the two world wars, at least at first …

This is of course accompanied by pictures of the Dungeness peninsula is Denge in England.

We then get to experience a little more accessible objects. Human-sized objects.

In addition, the article offers a list of very good links to visit to discover some of these facilities and it is frankly impressive!

Highly recommended reading…

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