If a film has not been exposed to radiation, what will its appearance be?

A film that has not been exposed to radiation will appear clear. This is because unexposed film has not undergone any processing that would lead to the development of an image. When x-rays or other forms of radiation interact with the film emulsion, they affect the silver halide crystals, resulting in a visible image after development. In the absence of exposure to these radiations, no latent image is formed, and therefore, the film retains its original state, which is clear before any film processing occurs.

In contrast, a dark film indicates exposure to radiation, where the image has been developed. Light gray or white films suggest varying degrees of exposure or film processing, which would not apply to a film that has not been exposed at all. Thus, the appearance of the film that has not been exposed aligns with the clear state described.