Goals

When you have completed chapter 8 you should be able to:

1. Describe the photoelectric effect and discuss why the wave theory of light cannot account for it.
2. Explain how the quantum theory of light accounts for the photoelectric effect.
3. Compare the quantum and wave theories of light and discuss why both are needed.
4. Describe x-rays and interpret their production in terms of the quantum theory of light.
5. Discuss what is meant by the matter wave of a moving particle.
6. State the uncertainty principle and interpret it in terms of matter waves.
7. Distinguish between emission and absorption spectra.
8. Give the basic ideas of the Bohr model of the atom and show how they follow from the wave nature of moving electrons.
9. Define quantum number, energy level, ground state, and excited state.
10. Explain how a laser works.
11. List the three characteristic properties of laser light.
12. Compare quantum mechanics and newtonian mechanics.
13. Describe what is meant by the probability cloud of an atomic electron.
14. State the exclusion principle.