RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-19445
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June 13, 2023 at 12:44 am
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Case 30 — 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-19445/30: address this question within its stated limits.