Sensor could detect concealed weapons without x-rays

A new sensor being patented by Ohio State University could be used to detect concealed weapons or help pilots see better through rain and fog.
Unlike X-ray machines or radar instruments, the sensor doesn't have to generate a signal to detect objects – it spots them based on how brightly they reflect the natural radiation that is all around us every day.

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<p><a href="http://www.physorg.com/news5543.html">Sensor could detect concealed weapons without x-rays</a></p> <p>A new sensor being patented by Ohio State University could be used to detect concealed weapons or help pilots see better through rain and fog. <br>Unlike X-ray machines or radar instruments, the sensor doesn't have to generate a signal to detect objects – it spots them based on how brightly they reflect the natural radiation that is all around us every day.</p>