What is the function of a dosimeter?

A dosimeter serves the critical function of measuring and recording the amount of radiation exposure that an individual is subjected to over a specified period. This tool is essential for monitoring radiation levels, ensuring that individuals working in environments with potential radiation exposure are kept safe and aware of their exposure. By collecting data on how much radiation a person encounters, dosimeters play an important role in health and safety protocols, allowing organizations to assess risk and implement necessary safety measures if exposure levels approach hazardous limits.

The other options, while related to radiation safety, do not accurately describe the primary role of a dosimeter. Shielding, for example, pertains to physical barriers that protect individuals from radiation, but does not involve measurement. Access limitation refers to managing who can enter areas where radiation is present, which is a different aspect of safety. Emergency notifications concern alert systems for hazards or incidents, again differing from the specific monitoring function that dosimeters provide.