Quote:
Originally Posted by vintagetoppsguy
Thanks! You don't have to explain how the tools work (I probably wouldn't understand anyway  ), but how long would it take to use these tools to examine a card? Just wanting to know how much extra time would be involved in the grading process? |
There are handheld "point and shoot" spectrometers, including one pictured in the below article. Blacklights are a form of spectroscopy, but there are highly advanced versions (using ir, gamma rays and x-rays) that include handheld devices.
SPECTROSCOPY IN ART AND ARTIFACTS AUTHENTICATION