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 ...

This defied the existing atomic model, which assumed atoms were uniformly spread out. From this, Rutherford proposed a revolutionary new model of the atom. He suggested that the atom consists of a ...

Changes to the atomic model Atoms have a central positive nucleus. Most of the mass of an atom is found in the nucleus. New evidence In-depth work on Rutherford's model showed it had limitations.

The Theory of Spectra and Atomic Constitution: Three Essays. By Prof. Niels Bohr — The beautiful conception which inspires and co-ordinates practically the whole of modern atomic physics is the ...

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, it was roughly ...