Curie (Ci) 05
Curie (Ci) 05 :
A unit of radioactivity. One curie was originally defined as the radioactivity of one gram of pure radium. In 1953 scientists agreed that the curie would represent exactly 3.7 x 1010 atomic disintegrations per second, or 37 gigabecquerels (GBq), this being the best estimate of the activity of a gram of radium. See also: Becquerel. The unit is named for Pierre and Marie Curie, the discoverers of radium
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