+when did sam morse invent the telegraph
Introduction. Developed in the 1830s and 1840s by Samuel Morse (1791-1872) and other inventors, the telegraph revolutionized long-distance communication. It worked by transmitting electrical signals over a wire laid between stations. Around the start of the 20th century, the Slaby-Arco wireless system was developed by Adolf Slaby and Georg von Arco. In 1900, Reginald Fessenden made a weak transmission of voice over the airwaves. By 1851, there were 67 Morse lines extending 20,000 miles, 8 House lines for 3000 miles, and 7 Bain lines for 2000 miles (see below for a description of the competing House and Bain telegraphs). The Mississippi River was crossed at St Louis by telegraph cables strung from high masts in 1852-3. The meaning and usage of the word radio has developed in parallel with developments within the field of communications and can be seen to have three distinct phases: electromagnetic waves and experimentation; wireless communication and technical development; and radio broadcasting and commercialization. In addition to helping invent the telegraph, Samuel Morse developed a code (bearing his name) that assigned a set of dots and dashes to each letter of the English alphabet and allowed for the simple transmission of complex messages across telegraph lines. The idea of wireless communication predates the discovery of radio with experiments in  wireless telegraphy  via inductive and capacitive induction and transmission through the ground, water, and even train tracks from the 1830s on. Samuel F.B. Morse, with the assistance of Alfred Vail, invented Morse Code in 1835 when, as a professor of arts and design at New York University, he proved that signals could … be transmitted by wire. 1 2XG: Launched by Lee De Forest in the Highbridge section of New York City, that station began daily broadcasts in 1916. 2  Like most experimental radio stations, however, it had to go off the air when the U.S. entered World War I in 1917, and did not return to the air. Confidence votes 2.3K. Samuel Morse was a co-developer of the telegraph system. In its infancy, the telegraph was limited to electric and/or electro-magnetic impulses: clicks, so to speak. The Morse Code was developed to enable the transmission of letters and numbers via these impulses, in a series of 'dots' and 'dashes', which were originally recorded as such on a moving paper tape. Operators soon learned to interpret the clicks without looking at the tape. The early history of radio is the history of technology that produced radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as  wireless telegraphy .
In the 1830s and 1840s