Journal of the Meteorological Society of Japan. Ser. II
Online ISSN : 2186-9057
Print ISSN : 0026-1165
ISSN-L : 0026-1165
Experimental Researches en the Snow Crystal Habit and Growth by Means of a Diffusion Cloud Chamber
T. Kobayashi
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1957 Volume 35A Pages 38-47

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Abstract

 With the object of examining whether or not Marshall and Langleben’s theory on the snow-crystal habit is in agreement with experimental fact, we carried out a series of experiments on artificial snow crystals by means of a diffusion cloud chamber where the cloud droplets had teen previously removed. The ambient vapour density was measured by a “drop hygrometer” method.
 It was found (1) that the snow-crystal habit is primarily determined not by the excess of the ambient vapour density tut by the ambient temperature; (2) that snow crystals produced in aerosol-free air show tendencies to grow either in sheath form or in dendritic form with sector-like structure; (3) that the trace of foreign vapours e. g. silicone or acetone remarkably affects the snow crystal habit.

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