The composition of the material. is dependent 2. The product of the density and the thickness of the material. The energy of the X-rays, which is incident upon the material. Material discontinuities cause an apparent change in these characteristics, and thus make themselves detectable. Figure 15-10 is a diagram of radiographic exposure showing the elements of the system.
Radiation passes through the object and produces an invisible or latent image in the film.
When processed, the film becomes a radiograph or shadow picture of the object. Since more radiation passes through the object where the section is thin or where there is a space or void, the corresponding area on the film is darker. The radiograph is read or interpreted by comparing it with the known nature of the object. Integrated Publishing's Official Web Page Click here for a current index of everything on this web site. All Rights Reserved.