RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-04953
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June 2, 2019 at 4:28 pm
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Case 14 — Crystal reflections: why a dark patch is not a coating test
A dark area appears at an oblique angle in a single photograph. Does that establish a coating difference?
Exercise RWI-04953/14: address this question within its stated limits.