Document Type

Article

Publication Date

12-1-1994

Publication Title

American Journal of Physics

Abstract

A zero-order rainbow angle may be defined as the relative minimum angle of deviation of geometrical light rays transmitted without internal reflections through a transparent particle. If the incident rays are parallel and the particle is a sphere, such a minimum does not exist. But if the incident rays ale not parallel or if the particle has an elliptical rather than circular cross section, an angle of minimum deviation, hence a zero-order rainbow, can occur. For a spherical water droplet, the zero-order rainbow will occur when a point source is placed less than a droplet radius away from its surface. If a column of water with an elliptical cross section is illuminated by a plane wave, a zero-order rainbow will occur if the length of the major axis of the cross section is more than twice the length of the minor axis.

Original Citation

Lock, James A. and T. A. McCollum. "Further Thoughts on Newton's Zero-Order Rainbow." American Journal of Physics 62 (1994): 1082-1089.

DOI

10.1119/1.17665

Version

Postprint

Volume

62

Issue

12

Included in

Physics Commons

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