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<p>[QUOTE=&quot;Marine1, post: 2502346, member: 80257&quot;]Jeff,</p><p>What I meant was IF the Photo is a good one (DSLR camera) and the white balance is correct my Newport spectrometer and Computer combination can detect AT from NT from the refracted light of the coin in the photo.</p><p>This is similar to what PCGS and NGC uses to &quot;sniff &quot; coins their term not mine.</p><p>The same equipment is used by astronomers to determine what stars are made of and how fast they are mov ing (Red and Blueshift Etc.) solely from the light (Photons) that are visible between ultra-violet and infra-red which is the visible spectrum as measured in angstrom units.</p><p>Does this help ??</p><p>M1[/QUOTE]</p><p><br /></p>

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