Transmission of sound by current (down)
In order to communicate the sound with reed vibrations, bell has carefully studied the way people speak their ears. Through research, bell has further opened up the idea of invention:
Telephone sets need to drive small and thin vibration membranes through acoustic currents and then springs。
In this line of thinking, bell immediately worked with his assistant, waterson, on two rough prototypes and then connected them to the wire for a call test. Unfortunately, despite their cries and the reeds vibrating, the sound heard either came through walls or went beyond them, with no response from the telephone machine, and the experiment failed again。
Bell continues to improve the programme and continues to experiment. One day, it was very hot, and bell, who had been working intensely for a long time, opened his window and heard a wave of chitra coming from afar. Bell is in the middle of a meditating mind: it can only make a small sound with the vibrating guitar string, and it is with the guitar that it has a resonance box that it can reach far and far. The reed's vibration is also too weak to spread it out, so there must be a resonator
I don't know. Bell finally perfected his invention:
Telephone sets require a sound aid to enable reed vibration to drive a synchronized air vibration。
Baer thought of it, and he was excited, and he immediately designed a sound aid box, which he and his assistants ran into overnight, while modifying the machine。
The following day, they carried out new tests in two rooms approximately 100 metres apart. When bell put some of the equipment into the acid, it accidentally splattered some of the acid on his leg and he shouted, "mr. Waterson, come here, i need you!" watterson, who was waiting in the other room for an experiment, suddenly heard bell's voice coming from the phone. Watterson immediately stormed into bell's room and shouted, “he heard! He heard!” and the two people hugged each other in a warm embrace, while bell completely forgot the pain of his leg。
History remembers this memorable moment: on the evening of 2 june 1875, the world's first telephone machine was born, and its first sentence was a cry for help
A phone made early on by bell
The prototype was subsequently improved by bell and, after six months of effort, the world's first functional telephone machine was finally created。
In the spring of 1876, bell obtained a patent for the invention of a telephone machine. The patent invention later became one of the most profitable inventions in business history. However, most of the money that bell made by telephone was spent on his own scientific research and that of others。
Bell invented a phone model
Bell then continued to improve his telephone calls. In april 1877, a telephone experiment between boston and new york city in the united states was successfully conducted and quickly reached europe. The telephone is rapidly spreading in the united states and around the world。
Bell made a live call
Today, on the united states court road, at gate 109, a copper brand was crucified with a clear line of gold: “the telephone was born here on 2 june 1875”. The prototype of the bell phone was still hidden at the washington museum of history and technology。
The invention of telephones has removed the gap between time and space and profoundly changed the way people communicate and interact with one another, bringing the human family closer together. The great success of bell's invention of the telephone will always be remembered。
