Rainbows, halos, and glories

1. Rainbows

2. Ice-crystal refraction effects: halos, arcs, and spots

3. Ice-crystal reflection effects: pillars, circles, and crosses

4. Complex displays, past and present

5. Scattering: light in the sky and color in the clouds

6. Diffraction: the corona, the glory, and the specter of the Brocken

7. Atmospheric refraction: mirages, twinkling stars, and the green flash.