What is the product of radiation intensity and time known as?

The term that describes the product of radiation intensity and time is known as exposure. Exposure quantifies the amount of radiation that a surface is subjected to over a specific period, often used in settings like radiographic testing. It is a critical concept in radiography as it directly relates to how much radiation is delivered in a given time frame, influencing the resulting image quality and the potential for radiation effects on both the material being tested and any personnel involved.

This concept encompasses not just the intensity of radiation (how strong it is) but also the duration of exposure, which together determine the overall dose of radiation received. Understanding exposure is essential for radiographic testing, as it allows technicians to ensure sufficient but not excessive radiation is applied, maintaining safety while achieving the desired imaging results.