Bohr proposed adding to the model the new idea of quanta put ... This spurred the United States to launch the Manhattan Project to develop the atomic bomb. Shortly after Bohr's return home ...

Photo: Atomic bomb test explosion in Alamagordo ... introducing the term "nuclear fission." Using Bohr's liquid drop model of the nucleus, they suggested that when split, both halves of the ...

In 1913, Niels Bohr revised Rutherford's model by suggesting that the electrons ... However, there was still a difference between the atomic number of the atom and the atomic mass.