
thumb|Fixed safelight in darkroom. thumb|An amber (light brown) safelight for use with certain black-and-white photographic papers
thumb|Fixed safelight in darkroom. thumb|An amber (light brown) safelight for use with certain black-and-white photographic papers
A safelight is a light source suitable for use in a photographic darkroom. It provides illumination only from parts of the visible spectrum to which the photographic material in use is nearly, or completely insensitive.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).