RE: [Demo notebook] Workbench questions: what to record before asking for service · RWI-15727
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May 29, 2022 at 3:28 am
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Case 4 — 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-15727/4: address this question within its stated limits.