Italian Antonio Meucci (1808.4.13.1889./kloc-0.18) first showed his invention to the public in 1860.
In the next few years, Antonio Mache was still trying to improve his invention. 187 1 year, antonio meucci applied for a telephone patent. It is said that due to economic reasons, he can't afford the patent fee, and the patent will expire in a few years.
1910 On February 3, 2000, at the Paris Motor Show, the scientific research achievement of scientist Claude-neon lights was exhibited for the first time. Neon lamp is bright and luminous, filled with fine neon or other charged glass tubes or bulbs, and is a cold cathode gas discharge lamp.
Neon tube is a sealed glass tube with electrodes at both ends, which is filled with some low-pressure gas. A voltage of several thousand volts is applied to the electrode, and the gas in the ionization tube makes it glow. The color of light depends on the gas in the tube. Neon lamp is a transliteration of neon lamp. Neon gives off the popular orange light, while other gases give off other colors.
How the telephone works:
1. When the speaker picks up the phone and speaks into the microphone, the vibration of the vocal cords excites the air to vibrate, forming sound waves.
2. Sound waves act on the microphone to generate current, which is called voice current.
3. Voice current is transmitted to the receiver of the other party's phone along the line.
4, and the receiver is just the opposite of the microphone-it converts the current into sound waves and transmits them to people's ears through the air. In this way, the simplest call process is completed.