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Show Different Colors of Clouds. In answer to a subscriber's question concerning the color of clouds, the Nature Na-ture and Science department of . St. Nicholas says: "White clouds are those which are so thin that sunlight comes through them, or else they are in such a position po-sition that the side seen by the observer ob-server is lighted by the sunlight. Black clouds are those that are so thick, or dense, that little sunlight passes through them, and at the same time are not illuminated by sunlight on the side seen by the observer. It is these heavy, large clouds that are most likely to produce rain. St. Nicholas. |