Testing the sound mirrors that protected Britain

I very rarely link to (or even watch) a video. But I am happy to make an exception for Tom Scott’s excellent entertaining and educational videos.

Here, he tests concrete sound mirrors with drones. I’m fascinated by sound mirrors — an early 20th century technology designed to provide early warning of approaching aircraft, which became obsolete quickly as aircraft speeds increased, and radar took over.

Comment

Leave a comment

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.