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 ...

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 ...

He discovered the atomic nucleus and developed a model of the atom that was similar to the solar system. Like planets, electrons orbited a central, sun-like nucleus. Acceptance of this model grew ...