RE: Crystal reflections: why a dark patch is not a coating test · RWI-27070

[QCNotebook 04987]

Correction note for “Crystal reflections: why a dark patch is not a coating test”: retain the wording beginning “Compare multiple controlled angles and describe the visible observation without asserting…” in the record. If later material changes it, add the date, the changed wording and the source for that change; do not invent a completed correction here. Keep the stated question separate from any broader claim.