Is the oldest of the basic need to communicate with each other. The communication system designed to send messages to each other from remote locations need to create interest. Optical communication system using the special interests that have been tried.
Use of an optical signal to the nearest eighth century BC, the Greeks by the fire code, notice, or require certain events to help send a transport connection. Improve the optical transmission system to a very active, compared to the technical limitations of the time. For example, data transmission speed communication links, limited to the data rate depends on the Fast senders can move his arm, an optical signal receiver of the human eye is the error from the phone line - of-sight transmission path, and the effect this type of fog and rain without a carrier was unreliable. So, it turned out more efficient, faster and more reliable couriers to send messages via the road network. Read More
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