David Edward Hughes (16 May 1831 – 22 January 1900) was an accomplished musician and a professor of music as well as chair of natural philosophy at a female seminary in Bardstown, Kentucky. He was born in London or Wales and immigrated to the United States as a young man. Hughes was also an experimental physicist, mostly in the areas of electricity and signals. He invented the carbon microphone and the induction balance (later used in metal detectors) and was the first to transmit and receive radio waves. Despite his facility as an experimenter, he had little mathematical training. He was a friend of William Henry Preece.
Eight years before Hertz or Marconi had demonstrated anything, Hughes was already the first person in the world to transmit and receive radio waves. At the time his work failed to satisfy colleagues’ demands for scientific method and proofs. His achievements went unrecognized for decades. Marconi knew Hughes through Preece. Sometime after 1896, Marconi befriended another Preece, both of them were experimenting with transmissions across the Conwy estuary. (This was the site where in 1918 a transmission of Morse signals was sent across the world to Australia.) There is some speculation that Marconi actually adopted some of Hughes ideas which he obtained through Preece.
He patented his telegraph system in the United States in 1855, and in less than two years, a number of small telegraph companies, including Western Union in early stages of development, united to form one large corporation — Western Union Telegraph Co. to carry on the business of telegraphy on the Hughes system. In Europe, Hughes’ Telegraph System became an international standard.
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