Electron Microscopes Can Reveal Filed-Off Serial Numbers
To make it unmanageable for law enforcement to hunt stolen cable car or weapons , thief will unremarkably grind off their metal vehicle recognition numbers or sequent numbers . And while techniques for trying to retrieve those routine do subsist , they ’re not as accurate as a new method developed by researchers at theNational Institute of Standards and Technology — or NIST — that use a scanning negatron microscope to detect imperfection in the alloy ’s crystalline construction ....