Generalized tertiary rainbow of slightly oblate drops: observations with laser illumination

Document Type

Article

Publication Date

3-20-1998

Disciplines

Physics

Abstract

The tertiary rainbow of acoustically levitated water drops was observed in the laboratory. Nontrivial caustics were observed for relatively small values of eccentricity. The angular locations of caustics were modeled with matrix methods of generalized ray tracing. Photographs of the scattering were in general agreement with models. Possible effects on the appearance of natural tertiary bow features are discussed.

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