Final answer:
Film badges contain film that is used to determine radiation exposure. The length of time a film badge can be worn depends on the specific type and purpose of the badge. It is important to follow the manufacturer's recommendations for wearing and replacing film badges.
Step-by-step explanation:
Film badges are worn to determine radiation exposure. They contain film that is similar to that used in dental X-ray film and is sandwiched between various absorbers to determine both the penetrating ability and amount of radiation. However, film badges should not be worn indefinitely, as the film can become fogged or hardened over time, which may affect its accuracy.
The length of time a film badge can be worn depends on the specific type of badge and the radiation exposure it is intended to measure. Some film badges are designed to be worn for a specific period, such as a week or a month. Others may have a cumulative measurement capability, allowing them to be worn for longer durations, such as several months or even a year.
It is important to follow the manufacturer's recommendations for wearing and replacing film badges to ensure accurate radiation monitoring.