Sunlight is white light. Clouds are made up of small transparent particles - water droplets and ice crystals. The light falling on the clouds is scattered by the particles so that white light emerges from the cloud and we see it as white. It is exactly the same as a field of snow or a bowl of sugar. The individual elements are transparent but they appear white because of the light they scatter.
In the evenings or mornings when the Sun has a reddish colour, clouds can appear pink, orange, yellow or red.
Underneath a cloud, so much light has been scattered out at the top that very little light makes it through to the base so it appears grey or almost black under very big clouds.
2007-12-01 00:15:14
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answer #1
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answered by tentofield 7
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Dense deep clouds exhibit a high reflectance (70% to 95%) throughout the visible range of wavelengths: they thus appear white, at least from the top. Cloud droplets tend to scatter light efficiently, so that the intensity of the solar radiation decreases with depth into the cloud, hence the gray or even sometimes dark appearance of the clouds at their base. Thin clouds may appear to have acquired the color of their environment or background, and clouds illuminated by non-white light, such as during sunrise or sunset, may be colored accordingly. In the near-infrared range, clouds would appear darker because the water that constitutes the cloud droplets strongly absorbs solar radiation at those wavelengths.
2007-11-30 23:46:28
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answer #2
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answered by Dureo 2
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oh because it is like smok or fog so it is white i wish it is pink for you to like it good luck.
2007-12-01 14:22:43
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answer #3
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answered by Super Andrew. 2
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Because they are the backs of Angels and that is how geezus wants it.
2007-12-01 02:09:43
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answer #4
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answered by Anonymous
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