Graham Bell

Graham Bell

 The inventor of the phone is Alexander Graham Bell, an English inventor born on March 3, 1847, in Edinburgh, studied in London, and taught people who could not speak or had difficulty speaking, and in 1870 After a year in Canada, he traveled to America and developed a new method of teaching deaf and mute speech. In 1872 he founded an educational school in the Boston area that became an important part of Boston University. In 1882, Bell was granted citizenship in America. Important stages in the life of Grah, but there are a series of important historical stages in the life of Bell, which contributed to change a lot of things in human history, the most important invention of the phone, and a range of other inventions. The idea of ​​inventing the phone in 1874 was determined by the operator, but to work on the telegraph machine, in order to experiment with the sounds transmitted by relying on it, and then interested in studying the phonograph device in order to identify the sound waves that draw, and study frequencies, and at that time most businesses, Some European governments rely on telegraph as a way to send and receive messages. He decided to use the inventors of others to develop the idea of ​​the telegraph work; he contacted the inventors Edison and Gray to help even in his new idea, which seeks to send more than one message via the telegraph, and not only on sound waves but on audible voices. This idea was an attempt to hear voices, but it needed to be further developed. In 1875, Graham and even the team of physicists visited the physicist Henry for advice on the device they were developing so that they could turn sound waves into audible sounds. He went on to visit the world of electricity and mechanics Watson, asking him to help him in his invention, and conducted a set of experiments on the telegraph machine to study the method of converting sound waves, and through the use of a series of wires voice connection was tried more than Once, Watson used one wire, tied his start on a metal disc, and ended it on another disk. He went into a room adjacent to the room where he worked with, and he spoke through the metal disc. Instead, he put his ear on the other disc, Watson, and then make sure the idea is that one wire Enough to transmit the sound, which contributed to the invention of the phone, which is one of the most influential inventions on humanity. He studied aeronautics so that in 1907 he succeeded in inventing a kite capable of flying, and carrying a person who was installed on it. This contributed to the development of the idea of ​​the invention of a naval aircraft. , Which was classified in the 20th century as the fastest vehicle in the world. Graham died on August 2, 1922, as a result of complications of diabetes, and was buried in Canada.