Chapter 37: Wave Optics

• Young's double-slit experiment: The main idea of the experiment, and its significance. The need for coherent light in any interference experiment.
   
• Interference pattern: The condition for constructive interference, giving bright interference fringes on a screen, is

d sin θ = mλ ,   with   m = 0, ±1, ±2, ...

• Interference in thin films: The general idea, why one sees differently-colored areas.

The rest of the chapter was not covered [except for a brief mention of interferometers later, in Chapter 39].