Published: July 30, 2018
Updated: December 5, 2018
Uranium was discovered in 1789 by German scientist Martin Heinrich Klaproth in the mineral pitchblende. It was isolated shortly after, but its radioactive properties were not discovered until 1896 by Henri Becquerel. The discovery of uranium fission in 1938 led several countries to begin research into the possibility of developing an atomic bomb.