If you visit Denge, a former Royal Air Force base on the Eastern coastline of Kent, England, you’ll find three enormous concrete structures. Two of the structures resemble a hollow ball, cut in half ...

A lot of science museums and parks feature something called an acoustic mirror. The one at Houston’s Discovery Green park is called the listening vessels. [Doug Hollis] created two acoustic mirrors 70 ...

Experimenting with acoustic mirrors Come and try out the mirrors created by Master’s students of 2018 for the very largest 3D printer! You’ll experience a physical phenomenon that is deployed on a ...

One of Kent's hidden war treasures has been added to a list of the country's most important monuments. A pair of acoustic mirrors at Fan Bay, Dover, were used to detect in-coming enemy aircraft and ...

Left to deteriorate, the mirror has now been restored after a £68,000 revamp A "forgotten" piece of history which protected Sunderland from Zeppelin attacks in World War One has been restored. Fulwell ...

In anti-Klein tunneling, sound waves bounce back as if hitting an invisible wall; in Klein tunneling, they pass through the barrier effortlessly—as if the wall isn’t there at all. In a groundbreaking ...