Other Definitions
curie (dict)

Curie

For other uses, see Curie (disambiguation).
The curie (symbol Ci) is a former unit of radioactivity, defined as 3.7×1010 decays per second. This is roughly the activity of 1 gram of the radium isotope 226Ra, a substance studied by the pioneers of radiology, Marie Curie and Pierre Curie (the unit is named for them). The curie has been replaced by an SI derived unit, the becquerel (Bq), which equates to one decay per second. Therefore 1 curie is 37 gigabecquerels (GBq) exactly and 1 Bq = 2.7027×10-11 Ci.

 

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