Linked from
The 20 pages that link to Photographic emulsion, each with the reason it gives.
Latent imageNarrower topic: It is the medium in which a latent image forms.
Photographic fixerRelated: The fixer penetrates this gelatin layer to reach residual silver halide.
Silver iodideRelated: AgI can serve as a light-sensitive silver halide in photographic materials.
DarkroomRelated: This coating is the material darkroom chemicals act upon.