He disproved the plum pudding model originally coined by Thompson. He found that an atom is pretty much just empty space.
Because Joel is the man
he found faults in the atomic theory of jj Thompson
According to Thomson's atomic theory, the mass of an atom was special evenly throughout its volume. Errest Rutherford's experiment proved this wrong.
Opinions vary. The discovery of the atomic nucleus ("most of the atom is empty space")
The atomic nucleus is positive because contain protons.
The atomic model of Rutherford was a step in the historical development of the today concept of an atom.
Atomic Theory
positive
Bohr's contribution to chemistry and physics regarding atoms was a theory on the atomic structure refining rutherfords model. Atoms were already shown to exist by others. Dalton is perhaps the most influential of the early pioneers.
Creation of the atomic bomb
The first atomic bomb
That the cake is a lie.