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snow crystal
a crystal of ice sufficiently heavy to fall from the atmosphere.
Source: Dictionary.com
snow crystal | Define snow crystal at Dictionary.com
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Snowflake - Wikipedia


A snowflake is either a single ice crystal or an aggregation of ice crystals which falls through the Earth's atmosphere as snow. Each flake nucleates around a ...



I grow my own snow crystals in the snowflake lab, where I can create my own designs, including some you will not find in nature. Click here to see how this is ...

Snowflake Photographs - SnowCrystals.com


This page shows photographs of real snowflakes that fell from the winter ...

Snowflake Science - SnowCrystals.com


The essence of science is figuring out ... Calling a snow crystal a snowflake is ...

Guide to Snowflakes - Caltech


A hexagonal prism is the most basic snow crystal geometry (see the Snowflake Primer). Depending on how fast the different facets grow, snow crystal prisms can  ...

Growing Snowflakes - SnowCrystals.com


This page shows a variety of movies of growing snowflakes. The Designer ...

Snowflake Movies - Caltech


Snow Crystal Movie Click the image (0.8 MByte) to see a time-lapse movie of a growing snow crystal that was cycled back and forth between roughly -15 C and ...

Frequently Asked Questions about Snow Crystals - Caltech


Why do snow crystals form in such complex and symmetrical shapes? To see why snowflakes look like they do, consider the life history of a single snow crystal,  ...