Issue Date: August 31, 2015
Determining The Age Of Fingerprints
A fingerprint’s distinct ridges and swirls gradually erode and become fuzzy as its chemical constituents migrate from peaks to valleys. Now, chemists at the National Institute of Standards & Technology say that how quickly those ridges fade could be used to determine how long a fingerprint has been on a surface.
That information is important for forensic scientists seeking to know which fingerprint was left near the time of a crime. “You’re trying to sort . . .
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- Chemical & Engineering News
- ISSN 0009-2347
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