Frost
Frost
Frost (/frɔːst/) is a thin layer of ice on a solid surface, which forms from water vapor in an above freezing atmosphere coming in contact with a solid surface whose temperature is below freezing, and resulting in a phase change from water vapor (a gas) to ice (a solid) as the water vapor reaches the freezing point.
Etymology
The term "frost" comes from the Old English frost or forst, and is related to the Old High German frost, and the Old Norse frosta.
Related Terms
- Dew Point: The temperature at which air must be cooled to become saturated with water vapor, and to form dew or frost.
- Freezing Point: The temperature at which a liquid turns into a solid; the freezing point of water is 0°C or 32°F.
- Ice: The solid state of water, which forms when water freezes.
- Water Vapor: The gaseous state of water, which can condense to form frost.
- Atmosphere: The layer of gases surrounding a planet, in which weather phenomena (like frost formation) occur.
- Phase Change: The transition of matter from one state to another, such as from gas (water vapor) to solid (ice) in the formation of frost.
External links
- Medical encyclopedia article on Frost
- Wikipedia's article - Frost
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