SCIENCE, INDUSTRY & BUSINESS LIBRARY / NEW YORK PUBLIC LIBRARY / SCIENCE PHOTO LIBRARY SCIENCE, INDUSTRY & BUSINESS LIBRARY / NEW YORK PUBLIC LIBRARY / SCIENCE PHOTO LIBRARY
Railway telegraph machine, historical artwork. Telegraph machines were used to send information as a series of electric pulses. The earliest uses included co-ordinating the use of a railway line. Electric telegraphs were an important application of the newly-discovered electromagnetic force. The first practical telegraph was invented by Samuel Morse in 1837. They quickly spread across the USA and Europe, and revolutionized communications. The two continents were permanently linked in 1866. This telegraph was on the Yarmouth and Norwich Railway, England, which was opened in 1844. Artwork published in a 19th century newspaper.
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