Final answer:
When an x-ray interacts with the X-ray plate, its energy is converted into visible light. This is similar to the effect of radiographic intensifying screens.
Step-by-step explanation:
When an x-ray interacts with the X-ray plate, its energy is converted into visible light. This process is similar to the effect of radiographic intensifying screens. X-rays are emitted from an X-ray machine and directed toward a specially treated metallic plate placed behind the patient's body. When the X-ray beam interacts with the X-ray plate, it causes darkening, which can be visualized as a shadow.