8 Rutherford Finds the Law of Radioactive Decay 1900 | |
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9 The Transmutation of Elements 1902 | |
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10 Einsteins LightQuantum Hypothesis 1905 | |
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11 Einstein Creates the Special Theory of Relativity 1905 | |
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12 Nernst and the Third Theorem of Thermodynamics 1905 | |
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13 Observing a Single Particle The RutherfordGeiger Counter and Later Electronic Detectors 1908 | |
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14 Jean Perrin and Molecular Reality 1909 | |
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15 Millikans OilDrop Experiment 1910 | |
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16 The Atomic Nucleus 1911 | |
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17 Tracks of Single Particles in Wilsons Cloud Chamber 1911 | |
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18 Kamerlingh Onnes Liquid Helium and Superconductivity 1911 | |
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19 Hess Finds Cosmic Radiation 1912 | |
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20 Max von Laue The Nature of X Rays and the Atomic Structure of Crystals 1912 | |
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21 Bragg Scattering 1912 | |
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22 J J Thomson Identifies Isotopes 1912 | |
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23 Bohrs Model of the Atom 1913 | |
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24 Moseley and the Periodic Table of Elements 1913 | |
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25 The FranckHertz Experiment 1914 | |
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26 Einstein Completes the General Theory of Relativity 1915 | |
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27 Sommerfeld Spatial Quantization and Fine Structure 1916 | |
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28 Nitrogen is Turned into Oxygen 1919 | |
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29 Astronomers Verify General Relativity 1919 | |
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30 Stern and Gerlach Observe Spatial Quantization 1922 | |
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31 The Compton Effect The Light Quantum Gains Momentum 1923 | |
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32 Matter Waves Proposed by de Broglie 1923 | |
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33 Bose and Einstein A New Way of Counting 1924 | |
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34 Bothe and Geiger Coincidence Experiments 1925 | |
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35 Paulis Exclusion Principle 1925 | |
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36 Spin 1925 | |
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37 Heisenberg and the Creation of Quantum Mechanics 1925 | |
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38 Diracs Mechanics of q Numbers 1925 | |
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39 Schrödinger Creates Wave Mechanics 1926 | |
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40 Borns Probability Interpretation of Quantum Mechanics 1926 | |
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41 FermiDirac Statistics Yet Another Way of Counting 1926 | |
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42 Heisenbergs Uncertainty Principle and Bohrs Complementarity 1927 | |
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43 Quantum Mechanics and Relativity The Dirac Equation 1928 | |
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44 The Band Model of Conductors and Semiconductors 192831 | |
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45 Hubble Finds that the Universe is Expanding 1929 | |
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46 Pauli Presents His Neutrino Hypothesis 1930 | |
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47 Lawrence and the Cyclotron 1931 | |
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48 Chadwick Discovers the Neutron 1932 | |
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49 Anderson Discovers the Positron 1932 | |
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50 Nuclear Reaction Brought About by Machine 1932 | |
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Isospin 1932 | |
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52 The Proton Displays an Anomalous Magnetic Moment 1933 | |
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