indication made from gas which is generally found in particles generated during a fire, signal made from smoke made in order to be located by others in a certain area
A smoke signal is a form of
optical communication used over a long distance, developed both in the
Americas and in
China. By covering a fire with a
blanket and quickly removing it, a
puff of
smoke can be generated. With some training, the sizes, shapes, and timing of these puffs can be controlled. Puffs may be observed from long distance, apparent to anyone within its visual range. With this in mind, signaling stations were often created to maximize the viewable distance. Stone bowls used by
Native Americans and the towers of the
Great Wall of China are examples of signaling stations.
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