Rainbows in the grass. I. External-reflection rainbows from pendant droplets.

@article{Lock2008RainbowsIT,
  title={Rainbows in the grass. I. External-reflection rainbows from pendant droplets.},
  author={Jennifer Lock and Charles Laurance Adler and Richard Fleet},
  journal={Applied optics},
  year={2008},
  volume={47 34},
  pages={
          H203-13
        }
}
In the mid-morning on a sunny day one can sometimes see glare spots associated with uncolored "rainbow" (i.e., fold) caustics due to the sunlight reflected from the surface of dew or guttation drops. We show that these dewdrop reflection rainbows are due to places on the droplet (i.e., from an "inflection circle") where its Gaussian curvature becomes zero. We work out the theory of such caustics with horizontally incident light and present a comparison of the theory to measurements made in the… CONTINUE READING

References

Publications referenced by this paper.
SHOWING 1-6 OF 6 REFERENCES

Padday, “The profiles of axially symmetric menisci,

  • J F.
  • Philos. Trans. R. Soc. London Ser. A 269,
  • 1971
Highly Influential
3 Excerpts

Stavroudis, The Optics of Rays

  • O N.
  • Wavefronts and Caustics (Academic,
  • 1972
1 Excerpt

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