SCIENCE, INDUSTRY & BUSINESS LIBRARY / NEW YORK PUBLIC LIBRARY / SCIENCE PHOTO LIBRARY SCIENCE, INDUSTRY & BUSINESS LIBRARY / NEW YORK PUBLIC LIBRARY / SCIENCE PHOTO LIBRARY
Morse's telegraph. Historical artwork of the receiver of a telegraph machine used to communicate in Morse code. The messages arrived at the receiver in wires as a series of long and short electrical pulses . Electromagnets attached to a printing head then converted these into dashes and dots respectively. In Morse code, each letter and number is represented by a combination of dots and dashes. The code was printed on a stream of ticker tape, which was collected at far left. Morse sent the first telegraph message in 1844. For an image of the transmitter, see image V400/068.
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