Today, June 2, marks the 145th anniversary of the phone's debut by American inventor and deaf teacher Alexander Graham Bell.
People have devised many ways to communicate with each other since ancient times, and the telegraph was perhaps the first simple phone that was invented, and in 1876 AD the inventor Alexander Graham Bell presented the first operational phone, and he obtained a patent.
American inventor Alexander Graham Bell was born in 1847 CE in Scotland, and he is the scientist and deaf teacher who is one of his most important achievements the invention of the phone, as he worked on improving the phonograph, and Graham Bell's mother was deaf, so his father taught him the deaf language, which affected his career choice at a later time. As a teacher for them, he worked at the Clark School for the Deaf and the American School of the Deaf, and died in 1922 in Canada.
During his invention of the phone, Bell worked on three basic equipment: A phonograph, a device that helps the deaf to see sounds, a multi-telegraph device, as well as a telegraph device for electric speaking or a phone, and through his multiple experiences he developed a basic concept for the phone and worked hard for more than a year to start it up, where he concluded that he could reproduce the tone of the human voice Pointing it over the wires, in 1876 AD, Bell gave the phone to the Academy of Arts and Sciences in Boston, and in 1877 AD a telephone company was created in his name, and the first phone was installed in a private home.
Graham Bell's success in the invention of the phone came as a direct result of his attempts to improve the telegraph, which has been a constant means of communication for almost 30 years, as he limited himself to sending and receiving one message at a time, and Graham Bell's extensive experience in the nature of sounds and music contributed to the prediction of a way to transmit messages Manifold across the same wire at the same moment, which was called the harmonic telegraph.
The principle of consensual telegraph was based on the ability to send many notes through the same wire, and at the same moment when these notes or signals differ in the pitch of sound, and in 1874 AD Bill informed his future wife's father about the progress of his research, and about the possibilities of multiple telegraphs, where he provided support His financial.
Graham Bell began his work on the multiple telegraph with the help of Thomas Watson, where they developed a device that transmits speech electrically. In March 1875 AD, Graham Bell secretly met with the director of the Smithsonian Institution, and told him about his ideas on the phone to receive support and encouragement from him to complete his work, and by June of The same year, Graham Bell and Watson demonstrated that different tones lead to varying electrical current strength in the wire, and to demonstrate this success required the design of a diaphragm transmitter that has the ability to change electronic currents, as well as a receiver that can reproduce these changes in the form of audible frequencies.
By experimenting with the harmonic telegraph, Graham Bell and Watson were able to discover the possibility of sound transmission through the wire on the second of July 1875 AD, when Watson tried to loosen a reed wrapped around the transmitter by chance, which led to the transmission of the vibration resulting from this movement through the wire to a device Another is in Bill's room, and hearing this resonance speeded up Bill and Watson to work, and they continued working on this idea the following year. It was narrated that Graham Bell had shouted into the speaker, saying: "Mr. Watson, come here, I want to see you." So Mr. Watson went, and announced that he had heard and understood what he had said, so this was the first phone call in history. [1] Patent registration.
After inventing the phone, Bell continued his experiences in developing communication equipment, in addition to developing many different devices, the most important of which is the photon device, a device that transmits sound in the form of a beam of light, and he continued his work on the audiometric device; It is a device used to measure a person's hearing, and made the first successful audio recording, and in 1895 CE his interests shifted to the field of aviation, where he worked on gunpowder missiles, flight helicopter codes, and eventually obtained five patents for air vehicles, and four patents for a system called dynamics Watercolor.
On February 14, 1876 A.D., Graham Bell filed a patent describing his method of transmitting sounds. On March 7 of the same year, the Patent Office granted him what is said to be one of the most valuable patents in the world.