New page: '''Activity''' is the rate of disintegration (transformation) or decay of radioactive material per unit time. The units of activity are the curie (Ci) and the becquerel...
'''Activity''' is the rate of [[disintegration]] (transformation) or [[decay]] of [[radioactive]] material per unit time. The units of activity are the [[curie]] (Ci) and the [[becquerel]] (Bq).