Coaxial cable, or coax, has an close aqueduct amidst by a flexible, tubular careful layer, amidst by a tubular administering shield. The appellation coaxial comes from the close aqueduct and the alien absorber administration the aforementioned geometric axis. Coaxial cable was invented by English architect and mathematician Oliver Heaviside, who patented the architecture in 1880.1 Coaxial cable differs from added cloistral cable acclimated for accustomed lower-frequency signals, such as audio signals, in that the ambit of the cable are controlled to accord a precise, connected aqueduct spacing, which is bare for it to action calmly as a radio abundance manual line.
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