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Atoms: History of Model Development
Current
Composition of Quarks ?
1903
1927
W: Heisenberg
Orbitals
1920
E. Rutherford
Protons & neutrons
1964
M. Gell-Mann
Nucleons: Quarks
1803
J. Dalton
Homogenous
Mater sphere
1897
J.J. Thomson
Plum pudding
model
E. Rutherford
Nucleus-Electron Shell model
(planetray model)
Democritus
460-370 BC