The Man Who Bridged the Atlantic
Guglielmo Marconi (1874–1937) was an Italian inventor who became a pioneer of long-distance radio, also known as wireless telegraphy. Scientists had discovered that invisible radio waves could travel through the air, but Marconi was one of the first people to use them to send real messages across long distances without any wires.
Marconi began his experiments in 1895, when he sent wireless signals about 1.5 miles. He continued to improve his transmitters, receivers, and antennas. In 1901, he achieved a breakthrough: the first transatlantic radio signal. He transmitted the Morse code letter 'S' — three dots — from Poldhu in Cornwall, England, across roughly 3,500 kilometers of ocean to Signal Hill in St. John's, Newfoundland, Canada.
It is important to understand that Marconi transmitted code, not voice. His system used Morse code, a language of short and long signals called dots and dashes. Radio that could carry the human voice came later. Even so, Marconi's wireless telegraphy was revolutionary because coded messages could now cross entire oceans in an instant.
Marconi's invention had a huge impact on the world. His wireless radios were installed on ships, and in 1912 Marconi operators aboard the Titanic sent distress signals that helped rescue survivors. In 1909, Marconi shared the Nobel Prize in Physics with Karl Ferdinand Braun, honoring his contributions to wireless communication.
