Neon lights are brightly emitting, electrically charged glass tubes or bulbs filled with thin neon gas or other rare gases, and are a type of cold cathode gas discharge lamp. A neon light 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 emits light. The color of light depends on the gas in the tube. Neon light is a transliteration of neon light, a rare gas that emits a popular orange red light, but the use of other gases can produce other colors, such as hydrogen (red), helium (pink), carbon dioxide (white), mercury vapor (blue), etc. Neon lights are the beauticians of the city. Whenever night falls and the lights are on, the colorful neon lights make the city look particularly beautiful. So, how was the neon light invented? It is said that neon lights were accidentally discovered by British chemist Ramsay in an experiment. That was a night in June 1898, when Ramsay and his assistants were conducting experiments in the laboratory to check whether a rare gas was conducting electricity. Ramsay injected a rare gas into a vacuum glass tube, and then connected two metal electrodes enclosed in the vacuum glass tube to a high-voltage power source, focusing on observing whether the gas could conduct electricity. At this moment, an unexpected phenomenon occurred: the rare gas injected into the vacuum tube not only began to conduct electricity, but also emitted an extremely beautiful red light. This magical red light surprised Ramsay and his assistant. Ramsay named this rare gas, which can conduct electricity and emit red light, neon. Later, this type of lamp that electrified the gas and emitted light was called a neon light, transliterated as a neon light. The method of manufacturing neon lights is to use low melting point sodium calcium silicate glass as the lamp tube, design different patterns and texts according to needs, process with a spray lamp, then sinter the electrode, and then vacuum pump it out, and fill it with different rare gases according to the required color. Modern neon lights are more exquisite, with some bending glass tubes into various shapes to create more moving graphics; Also, apply fluorescent powder on the inner wall of the lamp tube to make the color brighter and more colorful; Some neon lights are equipped with automatic igniters, causing various colors of light to shine and fade, complementing each other, making the city night colorful. Since the introduction of neon lights in 1910, they have gone through a hundred years without decline. It is a special low pressure cold cathode glow discharge light source, which is different from other arc lamps such as fluorescent lamps, high-pressure sodium lamps, metal halide lamps, mercury lamps, incandescent lamps, etc. Neon lights emit light by charging low-pressure inert gas into glass tubes and discharging cold cathode glow under a high-voltage electric field