1. Quantum Mechanics Mnemonic for p
“Now I need a drink, alcoholic of course, after the heavy lectures involving quantum mechanics.”
Pi day, Monday March 14 1

2. Establishing that E = h f Photoelectric Experiment of Lenard2

3. Stopping Voltage Versus Intensity I
And Versus Frequency f 3

4. Photoelectric Experiment of Millikan
Test eV0 = KEmax = hf – f, deduce h 4

5. Class Discussion: Use Photons To
Explain Fluorescence of Light Under UV Lamp 5

6. Blackboard discussion of Compton effect formula6

7. Establishing that Photon is Particle I
Compton Effect (X-Ray Scattering) 7

8. Make X-Rays with Electron Beam
Bremsstrahlung:
braking radiation
Class discussion: how to tell X-Ray is light, not an electron or neutron or other massive particle? 8

9. Establishing that Photon is Particle II
Compton Effect (X-Ray Scattering) 9

10. Establishing that Photon is Particle II
Compton Effect (X-Ray Scattering) 10

11. Quantitative Confirmation of de Broglie’s Relation:
Crystal Diffraction of Electron Beam
by Davisson and Germer 11

12. The Davisson-Germer Experiment:
Crystal Acts Like Thin-Film Interference 12

13. Scattering of Electrons Exactly Like X-Rays
Confirms de Broglie Relation and
Crystalline Structure of Surface 13

14. Varying Voltage V0 of Electron Gun Varies de Broglie Wavelength l14