Abstract

The optics of rainbows and fogbows is investigated theoretically for single water drops using Mie theory. Included in the calculations are a realistic solar illumination spectrum and the finite size of the Sun. Drop radii range from 3 to 300 µm. Results are presented on the location, width, contrast and color of both primary and secondary rainbows. Particular attention is given to rainbows formed in small drops.

© 1990 Optical Society of America