Explain the significance of the dosimeter.

The dosimeter is a vital tool in the field of radiation safety and health physics because it specifically measures the exposure of an individual to ionizing radiation over time. This is particularly important for workers who are regularly exposed to radiation in industries such as healthcare, nuclear energy, and research.

By accurately tracking the amount of radiation exposure, dosimeters help ensure that individuals do not exceed safe exposure limits, thereby protecting their health. The readings can also be used to assess compliance with safety regulations and protocols.

In contrast, other options pertain to different purposes: detecting radiation leaks would involve different instruments designed for environmental monitoring, shielding is related to equipment designed to protect individuals against radiation through barriers, and calibration of radiation equipment requires specialized tools and procedures to ensure that measuring instruments are providing accurate readings. The dosimeter's role is unique in its focus on personal radiation exposure, making the associated health management and safety monitoring essential in any radiation-related field.