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U.S. Department of Health & Human Services
Radiation Event Medical Management (REMM)

Becquerel - Animation
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Becquerel animation
  • The detection of alpha, beta, and gamma radiation enables the radioactivity of a source, a material or an object to be measured.
  • The unit used to measure radioactivity is the becquerel (Bq), which, since 1975, has replaced the curie (1 curie = 37 thousand million becquerels).
  • The activity of a source is measured in becquerels. One becquerel corresponds to the disintegration of one nucleus per second.

Adapted from Radior (IAEA, European Commission, CEPN)