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A transmission medium can be classified as a:
  • ''Linear medium'', if different waves at any particular point in the medium can be added;

  • ''Bounded medium'', if it is finite in extent, otherwise ''unbounded medium'';

  • ''Uniform medium'', if its physical properties are unchanged at different points;

  • ''Isotropic medium'', if its physical properties are the same in different directions.


, one example of a transmission medium]]
Electromagnetic Radiation can be transmitted through media such as Optical Fiber , Twisted Pair wires, Coaxial Cable , Dielectric -slab Waveguide s. They may also pass through any physical material which is transparent to the specific Wavelength , such as Water , Air , Glass , or Concrete . Electromagnetic waves do not require a transmission medium unlike mechanical waves, and so can travel through Vacuum of Free Space . Sound is by definition the vibration of matter, and so does require physical medium for transmission, as does Heat energy.


TELECOMMUNICATIONS


For telecommunications purposes in the United States , Federal Standard 1037C , transmission media are classified as one of the following:


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