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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.
Hoar frost, also hoarfrost, radiation frost, or pruina, refers to white ice crystals deposited on the ground or loosely attached to exposed objects, such as wires or leaves. They form on cold, clear nights when conditions are such that heat radiates into outer space faster than it can be replaced from nearby warm objects or brought ...
Hoarfrost can create dramatic and stunning scenes as ice needles form on objects in the wintertime, but what exactly is it and how does it form?
HOARFROST Significado, definición, qué es HOARFROST: 1. a white layer of pieces of ice like needles that forms on objects outside when it is very cold…. Aprender más.
Frost, atmospheric moisture directly crystallized on the ground and on exposed objects. The term also refers to the occurrence of subfreezing temperatures that affect plants and crops. Frost crystals, often called hoarfrost in the aggregate, form when the invisible water vapour of the atmosphere.
30 de nov. de 2016 · Under clear, cold nights in winter, a hoar frost can form. 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. The hoar frost is distinctive due to its ...
hoarfrost n noun: Refers to person, place, thing, quality, etc. (white ice crystals) escarcha nf nombre femenino: Sustantivo de género exclusivamente femenino, que lleva los artículos la o una en singular, y las o unas en plural. Exemplos: la mesa, una tabla. A layer of hoarfrost covered the grass. Una capa de escarcha cubría el pasto.
