Final answer:
X-ray film is made out of a Polyester known as radiographic film and is coated with an emulsion containing silver halide crystals.
Step-by-step explanation:
X-ray film is made out of a type of Polyester known as a radiographic film. It is coated with an emulsion containing silver halide crystals. When X-rays pass through the body and onto the film, the crystals are exposed and undergo a chemical reaction. This reaction creates an image on the film that can be developed and viewed.
Learn more about Composition of X-ray film