In co-axial cable data is transmitted as a light beam?

Answer 1

Coaxial (coax) cables work well to transmit electronic signals (data or anything else). First, let's look at the construction. Coax cables are composed of a center wire that is surrounded by an insulator (or dielectric) and then the whole of the inside is surrounded by a shield (like wire braid). There is (usually) a vinyl or rubberized jacket over the whole thing. The central wire and the shield act similar to two wires in a "twisted pair" configuration. In a basic or simple model of conduction by two wires, a voltage is applied to the ends of the two wires. Current will then flow (if it can) "out" from the source on one wire, and "back" toward that source on the other. At another instant of time, current flow in the wires will be reversed. It doesn't matter if the wires are a flat pair, like in a lamp cord, a twisted pair, like in a pair for connecting a phone, or the two conductors (the center conductor and the shield) as in a coax cable. (Certainly the characteristics are different in all types of conductors. Keep it simple here....) The coax cable has some, um, quirks. But the curious reader can find out more by using the link to the article posted by our friends at Wikipedia, where knowledge is free.

Answer 2

Hi,

A coaxial cable is the same as any other wire other than the fact that it has a center conductor and the other wire lead is wrapped around the center conductor, which is usually separated by a foam core. Without getting into the specifics on dialectric constants, frequency responses and loss in .db/100 feet in length, what it essentially does is use the ground lead as a shield to prevent interference from getting into the center conductor. This makes it ideal for carrying different types of signals that need to be `clean' when it arrives at the termination point.

Hope this helps,

Cubby

Answer 3

Not true.... co-axial cable is of copper construction. Data is transmitted as electromagnetic signals.

Answer 4

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