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A coaxial cable is a type of electrical cable made up of a central conductor wire surrounded by insulation and a metal shield, all wrapped in an outer layer. It's commonly used for carrying signals in applications like television, internet, and telecommunications because the metal shield helps protect the signal from interference.
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RG-59 flexible coaxial cable composed of: Outer plastic sheath Woven copper shield Inner dielectric insulator Copper core
Coaxial cable, or coax (pronounced /ˈkoʊ.æks/), 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. The term coaxial refers to the inner conductor and the outer shield sharing a geometric axis.