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Crystal reflections: why a dark patch is not a coating test · RWI-17890

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PartsReader 00278

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A dark area appears at an oblique angle in a single photograph. Does that establish a coating difference?

Question record — RWI-17890
FieldScope
SubjectCrystal reflections: why a dark patch is not a coating test
ExerciseDiscuss the stated question; distinguish sources, interpretations and unresolved points.
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TimingNotes 00279

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No single lighting setup settles that question. Compare multiple controlled angles and describe the visible observation without asserting material specifications that have not been verified.

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ReferenceLog 00280

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Clarification for “Crystal reflections: why a dark patch is not a coating test”: the point beginning “No single lighting setup settles…” belongs to the question as written. It should not be read as a report that a new check, purchase or experiment has been completed. Review focus: scope. Keep the stated question separate from any broader claim.

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