But if you see something that doesn't look right, click here to contact us! Subscribe for fascinating stories connecting the past to the present. He was an immigrant. Bell was born on March 3, , in Edinburgh, Scotland. After attending school in Scotland and London, the year-old immigrated to Canada with his parents in Italian inventor and engineer Guglielmo Marconi developed, demonstrated and marketed the first successful long-distance wireless telegraph and in broadcast the first transatlantic radio signal.
He was an impassioned champion of a strong federal government, and played a key role in defending In his 84 years, Thomas Edison acquired a record number of 1, patents singly or jointly and was the driving force behind such innovations as the phonograph, the incandescent light bulb and one of the earliest motion picture cameras.
By turns charismatic and ruthless, brilliant and power hungry, diplomatic and Serbian-American engineer and physicist Nikola Tesla made dozens of breakthroughs in the production, transmission and application of electric power. He invented the first alternating current AC motor and developed AC generation and transmission technology. In , Connecticut-born gun manufacturer Samuel Colt received a U. Colt founded a company to manufacture his revolving-cylinder pistol; however, sales were slow and the The internet got its start in the United States more than 50 years ago as a government weapon in the Cold War.
For years, scientists and Developed in the s and s by Samuel Morse and other inventors, the telegraph revolutionized long-distance communication. It worked by transmitting electrical signals over a wire laid between stations. In addition to helping invent the telegraph, Samuel Morse Live TV. This Day In History. History Vault. Telephone In , Bell started working on the harmonic telegraph — a device that allowed multiple messages to be transmitted over a wire at the same time.
Recommended for you. Thomas A. Watson, one of Bell's assistants, was trying to reactivate a telegraph transmitter. Hearing the sound, Bell believed that he could solve the problem of sending a human voice over a wire. He figured out how to transmit a simple current first, and received a patent for that invention on March 7, Five days later, he transmitted actual speech. Sitting in one room, he spoke into the phone to his assistant in another room, saying the now famous words: "Mr.
Watson, come here. I need you. Bell had other inventions as well -- his own home had a precursor to modern day air conditioning, he contributed to aviation technology, and his last patent, at the age of 75, was for the fastest hydrofoil yet invented. Bell was committed to the advancement of science and technology. As such he took over the presidency of a small, almost unheard-of, scientific society in the National Geographic Society. Perhaps he was tired of being the third Alexander in the family, sharing this first name with his father and grandfather.
Whatever reason for the addition, Bell drew inspiration from one of his father's former students, Alexander Graham, to add "Graham" to the mix. Bell may have liked the ring of his new moniker, but he was still known to his family as simply "Alec" or "Aleck.
He started out as an instructor at a boys' boarding school when he was only His father had developed "Visible Speech," a system of phonetic symbols. These symbols showed how to physically make the sounds needed to say any word. Bell was able to use this system with deaf students to help them learn to talk and improve their diction.
Bell also had some of his own methods. His mother had suffered severe hearing loss after an illness as a child, and Bell had used different ways to communicate with her. While working in Boston, Bell became a well-regarded teacher of the deaf. He worked at the Boston School for Deaf Mutes and saw private students as well. One of his students, Mabel Hubbard, eventually became his wife. Her father, Gardiner Greene Hubbard, became one of Bell's benefactors and supported his work. For another student, Bell developed special gloves with the letters of the alphabet on them, which allowed them to communicate through spelling words.
Bell remained committed to supporting education for the deaf throughout his life. He met with Helen Keller in and helped the young deaf mute girl with locating a good teacher.
Bell filed his patent for his version of the telephone on February 14, Later that same day, a lawyer working for Elisha Gray submitted a caveat, a type of announcement of an invention, for the telephone on his behalf. As he wrote to his parents in , Bell had been aware of his competitor's efforts and felt enormous pressure to finish his own design.
0コメント