RE: [Demo notebook] Reference notebook: corrections and recurring beginner questions · RWI-09584

Case 39 — Lume questions: why does my lume fade so quickly, and how should I compare it? · source wording exercise

Summary draft for “Lume questions: why does my lume fade so quickly, and how should I compare it?”: the answer addresses “Afterglow fades fastest in the first minutes and then settles to…”; the related point is “The real question is whether it's readable after an hour in…”. Keep both connected to the opening question, and mark any conclusion needing further records as unresolved. Review focus: source wording. Retain the source wording beside any paraphrase.