On Sat, Apr 21, 2012 at 6:51 PM, RussellMc wrote: > > Reflectometry based approaches already cover the cases where the object > > itself is the source of the radiation. > > They may "cover the cases" but not needing a TerraHertz source sounds > 'useful'. > It would be useful if they were talking about that ; "Terahertz can also be used for imaging to detect cancer tumors, diagnosing disease through breath analysis, and monitoring air toxicity." Very roughly speaking ; they built an optical detector IC that has acceptable response to the x-ray region of the spectrum. Without a monochromatic X-ray source that is specifically built to operate in sync with the detector IC, it is useless. I know some of you are thinking about the blackbody radiation that is the fundamental phenomena making thermal cameras and etc work but this is different. > > The images that I have seen within the last year of image data that > is being used to infer eg firearms being present, were horrendously > rough and appeared to have 'signal' nearly buried in noise. > > > Russell > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .