A device that enables hospital staff members to monitor their exposure to radiation. Film badges are worn by those people who work in X-ray and radiotherapy departments. A badge consists of a piece of photographic film in a holder worn on the clothing. The film has a fast (sensitive) emulsion on 1 side and a slow emulsion on the other. Small doses of radiation blacken only the fast emulsion; higher doses start to blacken the slow emulsion and make the fast emulsion opaque.
Film badge |
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