Wave Propagation Speed: Fibre Channell, Electrical Wiring, Transmission Medium, Radio, Vacuum, Refractive Index, Category 5 Cable, Plenum Multiplicative Inverse

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The wave propagation speed in meter per second is the speed at which a wavefront (e.g. an acoustic signal or en electro-magnetic signal such as a radio wavefront, a light pulse in a fibre channel or a change of the electrical voltage on a copper wire) passes through a medium. The propagation speed for transmission in a vacuum, for example wireless communication, is the speed of light, meaning that the VoP of 1 (100%). In electrical cables, the speed mainly depends on the isolating material (see table below). The velocity of propagation (VoP) or velocity factor (VF) is a parameter expressed as a number between 0 and 1, or a percentage, that reflects the ratio of a signal's transmission speed to the speed of light in vacuum. In vacuum, VoP is 1. See also refractive index.

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