Photo: Niels Bohr's research notes for his new atomic theory Rutherford's find came from a very strange experience. Everyone at that time imagined the atom as a "plum pudding." That is ...

There were a few problems with the model ... on splitting the atom. This spurred the United States to launch the Manhattan Project to develop the atomic bomb. Shortly after Bohr's return home ...

Philip Ball looks at how a little-known paper by Niels Bohr demonstrates the turmoil in physics on the brink of quantum ...

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