We consider external reflection rainbow caustic,,; due to the reflection of light from a pendant droplet where the light rays are at an arbitrary angle with respect to the horizontal. We compare this theory to observation of glare spots from, pendant drops on grass; we also consider the potential application of this theory to the determination of liquid surface tension. (C) 2008 Optical Society of America
Adler, Charles L.; Lock, James A.; and Fleet, Richard W., "Rainbows in the Grass. II. Arbitrary Diagonal Incidence" (2008). Physics Faculty Publications. 34.
Adler, Charles L., James A. Lock, and Richard W. Fleet. "Rainbows in the Grass. II. Arbitrary Diagonal Incidence." Applied Optics 47 (2008): H214-H219.
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