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Nonintrusive measurements of temperature and size of single falling raindrops.

Authors
  • van Beeck, J P
  • Riethmuller, M L
Type
Published Article
Journal
Applied optics
Publication Date
Apr 01, 1995
Volume
34
Issue
10
Pages
1633–1639
Identifiers
DOI: 10.1364/AO.34.001633
PMID: 21037705
Source
Medline
License
Unknown

Abstract

A nonintrusive laser technique, based on the detection of a rainbow, is presented that permits one to determine simultaneously the temperature and size of droplets. Therefore the Airy theory for a rainbow and a calibration rainbow pattern at isothermal conditions are applied. Rainbow patterns coming from droplets in the millimeter range have been recorded on a linear CCD array. It has been found that the sphericity of the droplets plays an important role for this rainbow-based technique.

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