Quote:
Originally Posted by goldfinder
I am an expert on IR as I worked with sensors that were used for military purposes so I know what I am talking about.
Goldfinder
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What sort of infrared military devices did you use, thermal scanners?
Thermal cameras are able to distinguish/detect subsurface thermo-conductive bodies from other surface environment. Not extremely deep, but it can. It was used this way in space observation too.
http://www.bbc.com/news/world-13522957