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RE: [Demo notebook] Workbench questions: what to record before asking for service · RWI-00359

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February 24, 2018 at 2:08 pm #5705
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Case 36 — 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-00359/36: address this question within its stated limits.