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Scattering of white light from levitated oblate water drops near rainbows and other diffraction catastrophes.
MedLine Citation:
PMID:  20706412     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Oblate drops of water illuminated perpendicular to their symmetry axis generate a hyperbolic-umbilic diffraction catastrophe near the primary rainbow [P. L. Marston and E. H. Trinh, Nature London 312, 529-531 (1984)]. Observations were made of this diffraction catastrophe generated by white-light illumination of acoustically levitated drops of water in air. The observations suggest what generalized rainbows would look like if they were produced in nature when sunlight illuminates large raindrops. Unlike the usual rainbow arc, the transverse cusp of the unfolded catastrophe is not distinctly colored. The hyperbolic-umbilic focal section is distinctly colored as is another diffraction catastrophe generated in the rainbow region when the drop is highly oblate.
Authors:
H J Simpson; P L Marston
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  30     ISSN:  0003-6935     ISO Abbreviation:  Appl Opt     Publication Date:  1991 Aug 
Date Detail:
Created Date:  2010-08-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3468-73     Citation Subset:  -    
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