Abstract
AbstractIt is shown theoretically that the rate of nucleation of the ice phase in supercooled water changes very rapidly with temperature in the neighbourhood of −40°C. Thus, in chilling a supercooled water cloud below this temperature one would expect to observe a rapid increase in the number of ice crystals which appear as the temperature falls. This is verified by observations made in a cold chamber. The different critical temperatures for the spontaneous appearance of ice crystals quoted by Schaefer (−39°) and the Oxford workers (−41°C) probably arise as the result of differences in the experimental conditions. It is tentatively suggested that the parts of mother‐of‐pearl clouds showing iridescence at temperatures around −80°C consist of spheres of ‘glassy’ ice, which may eventually crystallize spontaneously to form ice crystals towards the leeward edges of the cloud.
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Dates
Type | When |
---|---|
Created | 18 years, 6 months ago (Feb. 2, 2007, 7:05 p.m.) |
Deposited | 1 year, 9 months ago (Nov. 4, 2023, 4:56 p.m.) |
Indexed | 1 year, 6 months ago (Feb. 8, 2024, 2:22 p.m.) |
Issued | 73 years, 7 months ago (Jan. 1, 1952) |
Published | 73 years, 7 months ago (Jan. 1, 1952) |
Published Online | 18 years, 8 months ago (Dec. 14, 2006) |
Published Print | 73 years, 7 months ago (Jan. 1, 1952) |
@article{Mason_1952, title={The spontaneous crystallization of supercooled water}, volume={78}, ISSN={1477-870X}, url={http://dx.doi.org/10.1002/qj.49707833503}, DOI={10.1002/qj.49707833503}, number={335}, journal={Quarterly Journal of the Royal Meteorological Society}, publisher={Wiley}, author={Mason, B. J.}, year={1952}, month=jan, pages={22–27} }