Smoke Signals (11 St. 11 Min, 29 Aug 1800 Jahr v. Chr. – 22 St. 44 Min, 30 Jun 500 Jahr)
Beschreibung:
For a long time, Smoke Signals were used as the main form of communication. This is because it could be used over a long distance. In 150BC, the Greeks created a system of alphabetic characters and converted it into numeric characters. This way they could convert it using pairs of torches into smoke signals.
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Communication Systems
Geo Homework
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