Final answer:
Film badges offer advantages such as being inexpensive, providing a permanent exposure record, and allowing for an objective review of one's exposure history to radiation.
Step-by-step explanation:
The student's question pertains to the advantages of using a film badge for radiation monitoring. Film badges are personal dosimeters that contain photographic film used to detect exposure to ionizing radiation. These badges offer several advantages:
- Inexpensive: Film badges are a cost-effective option for monitoring radiation exposure.
- Provides a permanent record: Once developed, the film badge allows for historical tracking and comparison with standard exposures.
- Objective review of exposure history: The amount of film fogging is an objective indicator of radiation exposure and can be examined to assess historical exposure levels.
While film badges are comparatively less sensitive to low levels of radiation than other systems, such as those utilizing crystals, they continue to be used for their simplicity and the two aforementioned benefits.