True rime is the product of a freezing fog. Hoarfrost is the deposition of ice crystals formed from moisture in the air and occurs in the absence of fog. Rime accumulates when water droplets come into contact with a cold surface. It generally grows toward the prevailing wind. Hoarfrost forms when there is no wind. That said, the literary convention of using "rime" to represent any form of frost is acceptable, but one source says that "compared to rime, hoarfrost forms larger, more delicate crystals, but it is often difficult to tell the two apart; when in doubt 'rime' is never entirely wrong." Still, I'm going to make a point to use the more scientifically accurate semantics from here on out.
365Caws is now in its 14th year of publication, and was originally intended to end after 365 days. It has sometimes been difficult for me to find new material, particularly during the winter months, but now as I enter my own twilight years, I cannot guarantee that I will be able to provide daily posts. It is my hope that along the way I may have inspired someone to a greater curiosity about the natural world. If so, I can rest, content in the knowledge that my work here has been done.
Monday, November 30, 2015
Hoar
True rime is the product of a freezing fog. Hoarfrost is the deposition of ice crystals formed from moisture in the air and occurs in the absence of fog. Rime accumulates when water droplets come into contact with a cold surface. It generally grows toward the prevailing wind. Hoarfrost forms when there is no wind. That said, the literary convention of using "rime" to represent any form of frost is acceptable, but one source says that "compared to rime, hoarfrost forms larger, more delicate crystals, but it is often difficult to tell the two apart; when in doubt 'rime' is never entirely wrong." Still, I'm going to make a point to use the more scientifically accurate semantics from here on out.
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