What is a dosimeter used for?

A dosimeter is specifically designed to track cumulative exposure to radiation over time. It serves as a personal monitoring device for individuals who work in environments where radiation exposure is a concern. By providing a record of the amount of radiation exposure a worker has received, a dosimeter helps ensure that exposure levels remain within regulatory limits and can alert employees and employers if there are any concerning increases in exposure. This is crucial for maintaining safety standards and protecting workers' health in radiation-related occupations.

Other options do not accurately describe the primary function of a dosimeter. While devices exist to measure radiation levels in the environment, a dosimeter's role is more focused on individual exposure tracking rather than general environmental monitoring. First aid response is also outside of a dosimeter's function, as it is not a medical tool. Lastly, facilitating communication among workers pertains to different safety equipment and protocols, whereas dosimeters are specifically measurement tools.