Sound waves have the potential to deal tremendous damage at loud enough amplitudes – think about a sonic boom, for instance. But you don’t need a jet engine to turn sound into a weapon. The Long Range Acoustic Device is a creation of the American technology Corporation that was originally designed to defend safe zones around boats. It produces an incredibly loud noise that can travel almost 1000 feet in a targeted beam, and if the frequency is amplified enough it can cause legitimate physical pain in its victims.
Photo credit: US Army