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Feb 26 at 17:42 comment added Jos Bergervoet Note that the wave is mainly propagating outside the conductor and a little bit of it is lost in the metal, so that is a small part of the wave going inward which is then attenuated correctly along its directon of propagation.
May 13, 2015 at 6:51 vote accept Madhusudana
May 13, 2015 at 6:33 answer added ProfRob timeline score: 0
May 13, 2015 at 5:15 comment added CuriousOne Madhusudana, please ask nicely. Nobody here owes you an answer. Could it be that you misunderstand the textbook? "Conductivity of the medium" usually means the insulating material that fills the empty space of the waveguide or coaxial cable, it's not the conductivity of the metal that the waveguide is made of. Skin effect would be in addition to this effect of the insulator but is usually not the largest source of attenuation of many technically utilized cables.
May 13, 2015 at 4:17 history asked Madhusudana CC BY-SA 3.0