RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-27341
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August 19, 2025 at 9:52 pm
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Case 18 — 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-27341/18: address this question within its stated limits.