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Whiteout
Whiteout is a weather condition
in which visibility is reduced by snow and diffuse
lighting from overcast clouds.
Snow III
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There are two different forms of a whiteout:
- In blizzard conditions, the windblown snow in
the air may simply make it too difficult to see very far.
- In clear air conditions, when there is no snow falling, diffuse lighting
from overcast cloud may cause all surface definition to disappear. It
becomes impossible to tell how far away the snowy surface is. In polar
regions this optical illusion can make whole snow-covered mountains
invisible against the background white cloud, and the horizon cannot be
identified, slopes cannot be judged for steepness, and snow surfaces
cannot be seen. It is only when a dark or coloured object is placed on a
snowy surface that the surface can be seen at all.
This article is licensed under the GNU Free Documentation License. It uses material from the
Wikipedia article
"Whiteout"
and from
http://www.white-on.com
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