Radiographic Intensity
The measure of the amount of X-ray or gamma radiation remaining after passing through a workpiece. It significantly determines the density on the detector and serves to detect thickness variations or inhomogeneities.
The radiation intensity tells you how much X-ray or gamma radiation passes through the material. The more radiation that gets through, the brighter the film – meaning the material is thinner or less dense there. Too much intensity and the film is black, you can't see any flaws anymore. Too little and you barely see anything on the image. You have to choose the setting so that the blackening on the film is clearly readable, then you can see pores, cracks, or inclusions cleanly. If the image is too dark or too light, you adjust the exposure time or distance and retake the shot.