Next Big Future October 9, 2018
Researchers in China are working on a device they hope will be able to reveal the location of a target as far as 500 metres below the ocean surface monitoring tiny disturbances in the Earth’s magnetic field caused by metallic objects such as submarines. They are also working on sensors using cutting-edge quantum technology to chase the gravitational abnormality that a submarine creates in a large body of water. Powerful listening devices have also been planted in strategic seabed near the American naval base in Guam and in the South China Sea, some of which can “hear” low-frequency sounds from more than 1,000km away. A device developed by DARPA mounted on a spy plane achieved reliable results at a depth of 200 meters, detecting targets as small as sea mines…read more.