1909 ⟶ Millikan Measures Electron Charge

Robert Millikan measures the charge of individual electrons ...

Year

1909

1911

🧮 Millikan Measures Electron Charge

Robert Millikan measures the charge of individual electrons with unprecedented accuracy through the oil drop experiment, confirming that all electrons have the same charge and mass.⟶

PhysicsElectronMillikanOil Drop ExperimentAtomic PhysicsExperimental PhysicsQuantum Mechanics (precursor)

United States

🎯 Rutherford, Geiger, and Marsden Perform Gold Foil Experiment

Ernest Rutherford, Hans Geiger, and Ernest Marsden perform the gold foil experiment, which proves the nuclear model of the atom, with a small, dense, positive nucleus surrounded by a diffuse electron cloud.⟶

PhysicsAtomic PhysicsRutherfordGold Foil ExperimentNuclear ModelAtom

United Kingdom

☢️ Rutherford: Discovery of the Atomic Nucleus (Rutherford Model)

Ernest Rutherford: Discovery of the atomic nucleus (Rutherford model)⟶

PhysicsAtomic PhysicsRutherfordNuclear ModelAtom

United Kingdom