Broadband Wireless Access [WCII, NXLK, WCOM, satellite..] Message Board

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Technology Stocks : Broadband Wireless Access [WCII, NXLK, WCOM, satellite..]

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To: GVTucker who wrote (19)	4/14/1999 2:27:00 PM
From: Darren DeNunzio	Read Replies (1) of 1860

Near infra-red light is used in fibre optic cables. The light is just beyond the visible spectrum. The capacity depends on the type of information and on the distance over which the cable is laid. Fibre optics produce the most substantial efficiency gains of data transmission over short distances. One light source, say an energy-efficient metal halide lamp hidden from view in a box above the ceiling or under the floor, can supply many fibre-optic outlets. The light source is usually not installed in an air-conditioned space of the building, it produces no heat for the a/c. This further reduces energy consumption. The single lamp runs from a 230V power point. The higher the light frequency, the more energy it takes to run.

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