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John Dalton
Developed the atomic theory that we mostly still use, except for a few alterations. He used the billiard ball model. -
JJ Thomson
Used cathode rays to discover charged particles in the atom. Used plum pudding model. -
Wilhelm Roentgen
Discovered the x-ray by detecting electromagnetic radiation in wavelengths. -
Ernest Rutherford
Used the gold foil experiment to discover a positively charged nucleus. Designed a planetary model. -
Niels Bohr
Depicted the atom as a small positively charged nucleus surrounded by circular orbitals with electrons in them. -
Werner Heisenberg
Discovered a way to formulate quantum mechanics. Published Uncertainty Principle. -
Louis De Broglie
His ideas helped develop wave mechanics theory. -
James Chadwick
Discovered neutrons. Created the atomic mass unit. -
Erwin Schrodinger
Proposed Schrodinger's cat experiment. Calculated the wave equation. Worked with quantum mechanics.
