The Early Atom

* Emission and Absorption Spectrum
* Bohr's Model and the Hydrogen Spectrum

The Modern Atom

* Two-Slit Experiment for Waves and Particles
* Lasers: A Stimulated Emission

The Nucleus

* Types of Radiation

Nuclear Energy

* Nuclear Fission and Chain Reactions

Elementary Particles

* A Classical Analogy of a Repulsive Exchange Force