Snow grains: Difference between revisions
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<div class="definition"><div class="short_definition">( | <div class="definition"><div class="short_definition">(''Also called'' granular snow.) [[Precipitation]] in the form of very small, white opaque [[particles]] of [[ice]]; the solid equivalent of [[drizzle]].</div><br/> <div class="paragraph">They resemble [[snow pellets]] in external appearance, but are more flattened and elongated, and generally have diameters of less than 1 mm; they neither shatter nor bounce when they hit a hard surface. Descriptions of the physical structure of snow grains vary widely and include very fine, simple [[ice crystals]]; tiny, complex [[snow crystals]]; small, compact bundles of [[rime]]; and particles with a rime core and a fine [[glaze]] coating. It is agreed that snow grains usually fall in very small quantities, mostly from [[stratus]] clouds or from [[fog]], and never in the form of a [[shower]].</div><br/> </div> | ||
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Revision as of 16:08, 20 February 2012
snow grains
(Also called granular snow.) Precipitation in the form of very small, white opaque particles of ice; the solid equivalent of drizzle.
They resemble snow pellets in external appearance, but are more flattened and elongated, and generally have diameters of less than 1 mm; they neither shatter nor bounce when they hit a hard surface. Descriptions of the physical structure of snow grains vary widely and include very fine, simple ice crystals; tiny, complex snow crystals; small, compact bundles of rime; and particles with a rime core and a fine glaze coating. It is agreed that snow grains usually fall in very small quantities, mostly from stratus clouds or from fog, and never in the form of a shower.