How is it that a cloud, though made up of water, which is a transparent substance, can hide the sun?
The water in a cloud is composed of a vast number of isolated particles, which scatter the sun's light in all directions, and absorb a great deal of it. The rays being thus dispersed, we cannot see the sun, unless the cloud be thin, though some of its light penetrates the cloud.
The water particles act in just the same way as the roughnesses on the surface of a piece of ground glass.
by Rhys Baker4 years ago
If all clouds are made of water, why are some white, others black, and others deep blue?
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