Galilei
Lantern Timing Experiment for Speed of Light
Fizeau
Fizeau’s Rotating Cogwheel Experiment
Foucault
Rotating Mirror Speed-of-Light Experiment
Young
Double-Slit Interference Experiment
Hertz
Discovery of the Photoelectric Effect
Einstein
Photoelectric Effect Explanation
Thomson
Cathode Ray q/m Experiment
Millikan
Oil Drop Charge Quantization Experiment
Rutherford
Gold Foil (Geiger–Marsden) Scattering Experiment
Geiger
Gold Foil Scattering
Marsden
Gold Foil Scattering
Bohr
Atomic Spectra and Quantum Orbits
Rydberg
Spectral Line Formula
Broglie
Electron Wave Hypothesis
Davisson
Electron Diffraction Experiment
Germer
Electron Diffraction Experiment
Chadwick
Discovery of the Neutron
Hubble
Expansion of the Universe via Redshift