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LECTURE 29
     goals and outline

lecture title

    Atoms, Electrons, and Nuclei: "Seeing" the Very Small

text pages

    Ch 13 and 14, pp 157-180. Yes, that's right: all those pages! I don't go into as much detail in lecture as the book does. A lot of the reading is for cultural interest in this unit. The homeworks and exam are from the lectures more than the book.

lecture goals

  • Grasp how small atoms and their constituents are.
  • Learn the characteristics of scattering and spectroscopy experiments for seeing things you can't see.
  • Learn the multiple roles of the electromagnetic force, mainly the Coulomb electric force, in atoms.
  • Learn two old and one new way to "see" atoms.
  • Define radioactivity.
  • See the kind of experiment that identified the electron as a constituent of the atom.
  • Learn about the experiment that selected the planetary model of the atom over the plum pudding model.

outline of lecture

    1. How we see so small

    2. How we see atoms

    3. Radioactivity

    4. Electrons

    5. Nuclei

quotes

You are a lucky man, Rutherford, always on the crest of the wave!

-- Arthur Eve, colleague of Rutherford's

Well! I made the wave, didn't I?

-- Ernest Rutherford

In science, there is only physics; all the rest is stamp collecting.

-- Ernest Rutherford

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Please email any questions, comments, or suggestions to Professor Bernice Durand, bdurand@theory3.physics.wisc.edu.

Revised November 2, 1997.


Content © 1997, Bernice Durand
Images and layout © 1997, Shane Hamilton