Hexagonal platelet: Difference between revisions
From Glossary of Meteorology
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<div class="definition"><div class="short_definition">A small [[ice crystal]] of hexagonal tabular form.</div><br/> <div class="paragraph">The distance across the hexagonal facet of the [[crystal]] may be as large as 1–2 mm and the ratio of thickness to diameter as small as 1/100. This crystal form usually grows by [[vapor]] deposition at temperatures between | <div class="definition"><div class="short_definition">A small [[ice crystal]] of hexagonal tabular form.</div><br/> <div class="paragraph">The distance across the hexagonal facet of the [[crystal]] may be as large as 1–2 mm and the ratio of thickness to diameter as small as 1/100. This crystal form usually grows by [[vapor]] deposition at temperatures between -8° and -25°C. At temperatures between -12° and -16°C, as crystals grow and attain a higher [[fall velocity]], provided that the [[saturation]] ratio approaches water saturation, the corners sprout and form dendritic (treelike) side arms. <br/>''See'' [[dendrite]].</div><br/> </div> | ||
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Latest revision as of 15:24, 20 February 2012
hexagonal platelet
A small ice crystal of hexagonal tabular form.
The distance across the hexagonal facet of the crystal may be as large as 1–2 mm and the ratio of thickness to diameter as small as 1/100. This crystal form usually grows by vapor deposition at temperatures between -8° and -25°C. At temperatures between -12° and -16°C, as crystals grow and attain a higher fall velocity, provided that the saturation ratio approaches water saturation, the corners sprout and form dendritic (treelike) side arms.
See dendrite.
See dendrite.