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Nonintrusive measurements of temperature and size of single falling raindrops

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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.

© 1995 Optical Society of America

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Corrections

J. P. A. J. van Beeck and M. L. Riethmuller, "Nonintrusive measurements of temperature and size of single falling raindrops: erratum," Appl. Opt. 34, 7337-7337 (1995)
https://opg.optica.org/ao/abstract.cfm?uri=ao-34-31-7337

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