RE: [Demo notebook] Reference notebook: corrections and recurring beginner questions · RWI-30724
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July 29, 2026 at 7:39 am
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QCNotebook 05467
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Case 19 — 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-30724/19: address this question within its stated limits.