This Day In History
This Day In History
Saturday, October 19, 2019

«Radium»

February 4, 1936

Radium becomes the first radioactive element to be made synthetically. On 4 February 1936, radium E (bismuth-210) became the first radioactive element to be made synthetically in the United States. Dr. John Jacob Livingood, at the radiation lab at University of California, Berkeley, was bombarding several elements with 5-MEV deuterons. He noted that irradiated bismuth emits fast electrons with a 5-day half-life, which matched the behavior of radium E.
Radium, radioactive
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