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From a more scientific standpoint, frost or hoarfrost forms when moisture in the air skips the water droplet stage and appear directly as ice crystals on an object. However, hoarfrost is much...
Hoar frost is a type of feathery frost that forms as a result of specific climatic conditions. The word ‘hoar’ comes from old English and refers to the old age appearance of the frost: the way the ice crystals form makes it look like white hair or a beard.
Hoar frost forms when water vapour in the air comes into contact with an object that is below freezing. Rather than the water vapour first condensing onto the object and then freezing, the water vapour immediately freezes to form ice crystals.
Hoar Frost. According to the National Weather Service, hoar frost is defined as a "deposit of interlocking crystals formed by direct sublimation on objects, usually those of small diameter freely exposed to air, such as tree branches, plants, wires, poles, etc."
What is 'hoar' frost, and where does the name come from? The word 'hoar' comes from what's called old 'high' German...and it means either gray or magnificent. One reference compares it to...
According to the National Weather Service office in Riverton, Wyoming, the Old English dictionary (c. 1290) defines hoarfrost as "expressing the resemblance of white feathers of...
Hoarfrost, deposit of ice crystals on objects exposed to the free air, such as grass blades, tree branches, or leaves. It is formed by direct condensation of water vapour to ice at temperatures below freezing and occurs when air is brought to its frost point by cooling.
a deposit of interlocking ice crystals (hoar crystals) formed by direct sublimation on objects, usually those of small diameter freely exposed to the air, such as tree branches, plant stems and leaf edges, wires, poles, etc.; the surfaces of these objects are sufficiently cooled, mostly by nocturnal radiation, to cause the direct sublimation of ...
Hoar frost is a type of frost that forms when the air is moist and surfaces are cold. It is a deposit of ice crystals on objects exposed to the free air, such as grass blades, tree branches, or leaves.
Hoarfrost is a sort of wintertime cousin to summer's dew and develops by similar processes. Dew and hoarfrost accumulate on objects when there is more moisture in the air than the air can carry. Warm air carries in suspension more liquid water than does cold air.