Traditional Culture Encyclopedia - Photography major - What are photographic negatives and hospital X-rays made of?

What are photographic negatives and hospital X-rays made of?

Photographic negatives and hospital X-rays are coated on polyester film with silver halide.

Among them, the photosensitive material silver halide is mainly the photosensitive material silver iodide, or silver bromide and silver chloride, while the polymer PET is polyethylene terephthalate, which is the same as the photosensitive film, but the photosensitive characteristics are different.