Before the invention of radar during World War II, incoming enemy warplanes were detected by listening with the aid of “sound locators” that looked more like musical instruments than tools of war.

Back before radar, dudes in the military had to rely on their ears to detect incoming enemy planes. So they enhanced them with these flat-out crazy “sound locators.” [Noise for Airports via NotCot] ...

Before the invention of radar during World War II, incoming enemy aircraft were spotted using "sound locators" that looked more like musical instruments than tools of war. This one was being used at ...

Where did that noise come from? It’s a question people have been asking for millennia, but in the past century we started to build machines that would help us find out. Here are some of the most ...

PERTH, Australia — Four weeks after the Malaysia Airlines jet vanished, two ships deployed sound locators Friday in the southern Indian Ocean in a desperate attempt to find the plane’s flight ...