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Coaxial Cable
              An electrical cable containing a copper conductor, an insulator covering it, and a braided metal mesh that reduces
              crosstalk and signal interference is known as a coaxial cable. A braided metal conductor surrounds the insulator, which
              helps to reduce cross talk and electrical signal interference. The core copper conductor is used to transmit signals, the
              insulator to provide insulation to the copper conductor. To further safeguard the cable, the entire set-up is once more
              wrapped with a layer of protective plastic. Coaxial cable installation is simple. These cables are more dependable and
              long-lasting because of their improved cut-through resistance.
                                        Protective
                                        Plastic Layer
                                                          Braided
                                                       Metal Conductor
                                                                        Insulator
                                                                                       Copper
                                                                                      Conductor









              Fibre Optic Cable
              A cable that communicates through electrical impulses is referred to as a fibre optic cable. These cables contain the
              optical fibres that are plastic-coated and utilised to transmit data via light pulses. The plastic coating shields the optical
              fibres from the effects of other types of wiring’s electromagnetic interference, heat, and cold. Compared to copper
              wires, fibre optic cables offer faster data transmission. There is no electromagnetic interference that affects them.
              However, fibre optic cable installation and upkeep are expensive and challenging.
                                     2 cm
                                         High density polyethylene
                                         insulation (17 mm)

                                                            Copper tubing (8.3 mm)
                                                                    Steel wires    Water-resistant jelly

                                     1 cm                                          casing 2.3 mm)



                                                                                          Optical
                                                                                          fibers



                      Do You Know?

                     •  Alexander Graham Bell is credited with creating Twisted Pair cables.
                     •  Coax is another name for coaxial cable.
                     •   In addition to being used for telecommunications, fibre optic wire is also employed by lasers, hydrophones
                       for seismic waves, SONAR, imaging devices, and sensors for measuring temperature and pressure.


              Unguided Media

              The electromagnetic waves are transmitted without the need of any physical medium in an unguided transmission. As
              a result, it’s also called wireless transmission. Features of unguided media are as follows:
              Ð ÐThe signal travels over empty space (air).

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