The smoke signal is one of the oldest forms of long-distance communication. It is a form of visual communication used over long distance.
Read more about Smoke Signal: History and Usage
Famous quotes containing the words smoke and/or signal:
“I don’t want to smoke cigars or go to stag parties, wear jockey shorts or pick up the check.”
—Shelley Winters (b. 1922)
“The experience of a sense of guilt for wrong-doing is necessary for the development of self-control. The guilt feelings will later serve as a warning signal which the child can produce himself when an impulse to repeat the naughty act comes over him. When the child can produce his on warning signals, independent of the actual presence of the adult, he is on the way to developing a conscience.”
—Selma H. Fraiberg (20th century)