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Crystal reflections: why a dark patch is not a coating test · RWF-24658

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ClaspCheck 05546Participant
#1

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

Question record — RWF-24658
Field Scope
Subject Crystal reflections: why a dark patch is not a coating test
Exercise Discuss the stated question; distinguish sources, interpretations and unresolved points.
#2

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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