In preliterate societies the association of rhythmic or repetitively patterned utterances with supernatural knowledge endures well into historic times. Knowledge is passed from one generation to another. Similar as in the Southern tradition
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Microwave transmission systems based on terrestrial antennas are similar to satellite transmission system. Providing reliable high-speed access, they are used for cellular phone networks.
The implementation of the
Founded in 1982 and headquartered in Palo Alto, USA, Sun Microsystems manufactures computer workstations,
For more detailed information see the Encyclopaedia Britannica:
Automation is concerned with the application of machines to tasks once performed by humans or, increasingly, to tasks that would otherwise be impossible. Although the term mechanization is often used to refer to the simple replacement of human labor by machines,
Fiber-optic cable networks may become the dominant method for high-speed Internet connections. Since the first fiber-optic cable was laid across the Atlantic in 1988, the demand for faster Internet connections is growing, fuelled by the growing network traffic, partly due to increasing implementation of corporate networks spanning the globe and to the use of graphics-heavy contents on the
Fiber-optic cables have not much more in common with copper wires than the capacity to transmit information. As copper wires, they can be terrestrial and submarine connections, but they allow much higher transmission rates. Copper wires allow 32 telephone calls at the same time, but fiber-optic cable can carry 40,000 calls at the same time. A capacity,
Copper wires will not come out of use in the foreseeable future because of technologies as
For technical information from the Encyclopaedia Britannica on telecommunication cables, click
An entertaining report of the laying of the FLAG submarine cable, up to now the longest fiber-optic cable on earth, including detailed background information on the cable industry and its history, Neal Stephenson has written for Wired: Mother Earth Mother Board. Click
Susan Dumett has written a short history of undersea cables for Pretext magazine, Evolution of a Wired World. Click
A timeline history of submarine cables and a detailed list of seemingly all submarine cables of the world, operational, planned and out of service, can be found on the Web site of the
For maps of fiber-optic cable networks see the website of