Show radioactive material radioactive material often Is if mentioned in this atomic age radioactive dio dlo active materials are unstable atoms which shoot out radiation and particles until the nucleus falls into a normal or stable form radium and a few other elements are naturally unstable many common elements can be made radioactive by cyclotrons or an atomic pile which is an atomic furnace the pile consists of uranium distributed in a lot of pure carbon or other materials te rials it burns fissionable material and releases atomic energy |