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Coaxial cable, or coax (pronounced / ˈ k oʊ. æ k s /), is a type of electrical cable consisting of an inner conductor surrounded by a concentric conducting shield, with the two separated by a dielectric (insulating material); many coaxial cables also have a protective outer sheath or jacket.
Current in the inner conductor is flowing into the page. Current in the outer conductor is flowing out of the page. No electric field exists inside the conductors, so the Poynting vector in the gray areas is zero. The magnetic fields of inner and outer conductors cancel outside of the cable, so the Poynting vector outside the cable is also zero.
English: Diagram of a hybrid fiber coaxial (HFC) network, the type of technology used in modern cable television networks. The cable signal originates at a regional headend, where many television channels are transmitted on an optical fiber cable, which is carried on utility poles or underground.
Generally use coaxial cable types such as RG-6 and RG-59 (except for twin-lead). Belling-Lee/IEC 169-2 connector TV aerial plug (a.k.a. antenna plug) Television antenna connection for most video devices outside North America. Used by early home computers and game consoles to connect them to TVs because of the lack of any other connector.
Fiber-optic cables are used to transmit light from one computer/network node to another. The orders of the following wired technologies are, roughly, from slowest to fastest transmission speed. Coaxial cable is widely used for cable television systems, office buildings, and other work-sites for local area networks. The cables consist of copper ...