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  2. Telegraphy - Wikipedia

    A telegraph is a device for transmitting and receiving messages over long distances, i.e., for telegraphy. The word telegraph alone generally refers to an electrical telegraph. Wireless telegraphy is transmission of messages over radio with telegraphic codes.

  3. Telegraph | Invention, History, & Facts | Britannica

    Apr 14, 2025 · telegraph, any device or system that allows the transmission of information by coded signal over distance.

  4. Morse Code & Telegraph: Invention & Samuel Morse - HISTORY

    Nov 9, 2009 · Developed in the 1830s and 1840s by Samuel Morse and other inventors, the telegraph revolutionized long-distance communication. It worked by transmitting electrical signals over a wire laid...

  5. Timeline of North American telegraphy - Wikipedia

    The timeline of North American telegraphy is a chronology of notable events in the history of the electric telegraphy in the United States and Canada, including the rapid spread of telegraphic communications starting from 1844 and completion of the …

  6. Development of the telegraph industry - Encyclopedia Britannica

    Apr 14, 2025 · A variant that ultimately became known as the International Morse Code was adopted in 1851 for use on cables, for land telegraph lines except in North America, and later for wireless telegraphy. Except for some minor improvements in 1938, the International Morse Code has remained unchanged.

  7. Telegraphy - Simple English Wikipedia, the free encyclopedia

    With telegraphy (from the Greek words tele (τηλε) = far and graphein (γραφειν) = write), messages are sent over long distances without any need to physically transport letters. To send messages, a telegraph sends pulses of electricity through wires in a special code .

  8. TELEGRAPHY Definition & Meaning - Merriam-Webster

    The meaning of TELEGRAPHY is the use or operation of a telegraph apparatus or system for communication.

  9. History and Development of the Telegraph -- Telegraphy - Edinformatics

    Telegraphy (from the Greek words tele = far away and grapho = write) is the long-distance transmission of written messages without physical transport of letters, originally over wire. Radiotelegraphy or wireless telegraphy transmits messages using radio.

  10. Telegraphy - New World Encyclopedia

    Telegraphy (from the Greek words tele = far and graphein = write) is the long-distance transmission of written messages without physical transport of letters. Originally, it involved changes that could be observed from a distance, known as optical telegraphy.

  11. The Origins of the Telegraph - The Franklin Institute

    Jun 30, 2023 · For centuries, people tried to find ways to communicate across long distances quickly. Flags, sounds, smoke, or lights would only go as far as they could be seen or heard. While the idea for a machine dates back to the 1700s, it wasn’t until the 19 th century that the telegraph – a machine that transmits text across distance – was developed.

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