IN the spring of 1860 an article was published in this magazine with the above title, giving an account of the extension of the telegraph up to that time. Its progress since has been very great in ...

On this date in history: In 1844, the first U.S telegraph line was formally opened -- between Baltimore and Washington. The first message sent was "What hath God wrought?" In 1883, the Brooklyn Bridge ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Telegraph repeaters amplified ...

Telegraph relays amplify an electrical signal in a telegraph line. Telegraph messages travel as a series of electrical pulses through a wire from a transmitter to a receiver. The pulses fade in ...

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