The Hidden!

Ice nuclei formation

https://patents.google.com/patent/US3567117A/en?q=atmospheric&q=cooling&q=artificial+snow&oq=atmospheric+cooling+by+artificial++snow&page=1

Abstract
A method of making snow by controlling the size and life of ice nuclei generated in a snow-making machine. Ice nuclei are generated by homogeneous nucleation in a tunnel like housing through injection of propane or other refrigerant into a stream of moist air. The relative humidity about the ice nuclei stream is controlled relative to the temperature and humidity of the atmosphere to prevent or inhibit evaporation of the ice nuclei for such time as to ensure statistically effective mixing with adjacent liquid phase water droplets which are super cooled by the air mass. The ice nuclei formed infect the water droplets and they release their latent heat to the air to form snow like particles. The purpose of a snow-making apparatus is to emit at least partially frozen particles which will gather on the ground as a more or less loose snow like mass. An essential property of any snow-making device is that it effects the initiation of the freezing process in a large proportion of the water particles generated, otherwise the spray produces an artificial ice storm. get it an ice storm, snow and blizzards of an artificial nature

US3567117A
US Grant

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Inventor William E C Eustis Current Assignee DEWEY ELECTRONICS CORP Original Assignee HEDCO Priority date 1969-08-29
Family: US (1)
Date
App/Pub Number
Status
1969-08-29
US3567117A
Expired - Lifetime
1971-03-02
US3567117A
Grant