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Showing results for tags 'opalescence'.
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This article on how the light produces the colors I will begin with phenomena that everyone can see in daily life. If we look at the flame of a candle or a cigarette lighter in a dimly lit room, the flame is blue-violet in the lower part and yellow-orange in the upper part. If the part of the wick running over the wax is very short, then the flame is very small and it appears only blue. The flame of a gas stove is also blue, but as soon as we increase the gas supply, yellow tongues appear in the upper part of the flame. The smoke of a cigarette, whose smoke columns are not very
