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Radio waves to detect explosives

By Jony     Jan 26, 2007 in Technology
Scientists in Japan have developed a new technique for detecting explosives such as TNT in landmines or luggage using radio waves.
Writing in Superconductor Science and Technology journal this week, they said the technique is superior to conventional methods of detection such as X-rays, and can identify different types of white powder, from flour and salt to drugs and explosives
This is good development; previously it was difficult to detect such explosives and they used to use mostly metal detectors. But with this new technology they can actually detect the TNT. The device is called superconducting quantum interference device (SQUID). It has sensitive magnetic sensors to detect nitrogen.
More about TNT, Detect, Explosive