“This technology has shown a great deal of promise as a way of detecting weapons without a physical search,” Kelly said in a speech before a police group in Manhattan.
Known as terahertz imaging detection, the technology functions similarly to night-vision goggles, which detect infrared radiation. But unlike much infrared radiation, the terahertz wavelength is not blocked by clothing.
“With terahertz, you will be able to identify a gun as a gun,” said John Federici, a physics professor at the New Jersey Institute of Technology.
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