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The Coming of the Telegraph
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aboard Agamemnon American amplifier antenna armouring Atlantic cable Atlantic Telegraph Company Atlantic telephone cable Bell Laboratories Bell Labs British Post Office cable ship cable-laying carried century circuit coaxial cable coils communications satellites complete COMSAT copper Courtesy Cyrus Field deep-sea distance early Earth Eastern electrical electronic engineers England Europe feet frequencies grapnel gutta-percha half Heaviside hundred miles instruments insulation Intelsat inventions ionosphere Laboratories laid land later launched layer laying length London messages miles of cable minute Monarch Morse never Newfoundland ocean Oliver Heaviside once operation orbit paying-out perhaps possible problem produced radar radio waves realised received relay remarkable scientists sea-bed signals space speech splice stations submarine cable telegraph cable Telstar tests Thomson thousand miles tion tons transatlantic telephone transatlantic telephone cable transmitted United vacuum tubes voice Whitehouse wire words