The film badge dosimeter, or film badge, is a dosimeter used for monitoring cumulative exposure to ionizing radiation. The badge consists of two parts: photographic film or dental X-ray film, and a holder. The film is removed and developed to measure exposure. The film badge is used to measure and record radiation exposure due to gamma rays, X-rays and beta particles. It is essentially useless for measuring neutron radiation.
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—Salman Rushdie (b. 1948)
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—Administration for the State of Con, U.S. public relief program (1935-1943)