RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-13525
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October 18, 2021 at 2:42 pm
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Case 10 — 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-13525/10: address this question within its stated limits.