THE first international radium standard was prepared by Mme. Curie in 1911; it consisted of 21·99 mgm. of purest radium chloride. By comparing its radiation with those from other radium sources, the ...
Suggested Citation: "5 Possible Steps Toward the Exclusive Use of SI Units for Radiation Measurements." National Academies of Sciences, Engineering, and Medicine. 2017. Adopting the International ...