Atomic Theory Timeline
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Aristotle
Democritus
Antoine Lavoisier
John Dalton
Sir JJ Thompson
Robert Millikan
Sir Earnest Rutherford
Neils Bohr
Sir James Chadwick
Erwin Schrodinger
Wolfgang Pauli
Friedrich Hund
The Aufbau Principle
Albert Einstein
Otto Hahn, Lise Meitner, and Fritz Strassman
Sir Earnest Rutherford
1911
New Zealand born British
Contribution
Discovered alpha particles (a=He^+2) are positive.
Discovered beta particles (B=e-) are negative.
(Y') is light.
His discoveries led to the discovery of the nucleus.