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Replace the incandescent lamp with a new light source

As we all know, the incandescent lamp is an important invention of Edison. This important invention makes mankind bid farewell to the dark and usher in the light. But the incandescent lamp consumes too much electricity. It only takes less than one tenth of its energy to turn into light energy, and the rest is wasted. So people are trying to find a way to replace the incandescent lamp with a new light source

The two poles of an energy-saving lamp are ordinary tungsten wires. After the tungsten wires are electrified and heated, they can emit electrons. When a relatively high voltage is applied to both sides of the lamp tube, an electric field is formed. These electrons will be accelerated in the lamp tube to form an electron flow with a certain speed and energy. The lamp tube is pumped into a vacuum and filled with mercury, which is what we call mercury.

When the lamp is electrified and heated, the mercury evaporates from the liquid state to the gaseous state, forming free mercury atoms. The electrons in the electron stream hit the mercury atom at a certain speed, so that the mercury atom is excited and becomes an electric ion in the excited state. It is called a step. After a short time, the mercury in the excited state spontaneously falls back to the original state, and at the same time, it releases ultraviolet light, which cannot be used for lighting. So we coated some fluorescent materials on the inner wall of the lamp, Under the bombardment of ultraviolet light, the fluorescent material can emit more natural light after being excited, which can be used for our lighting.

The more common energy-saving lamps on the market include ordinary lamps and tricolor lamps, which have the advantages of saving electricity compared with incandescent bulbs. The difference is that the color rendering of ordinary lamps is low, while the three primary color lamps show natural sunlight color, and the color rendering and light efficiency are better than ordinary lamps. From the above, we can know that Mercury plays an intermediary role in energy-saving lamps. Without mercury, energy-saving lamps will not emit light. There is very little mercury in each lamp.

When the lamp is electrified and heated, the mercury evaporates from the liquid state to the gaseous state, forming free mercury atoms. The electrons in the electron stream hit the mercury atom at a certain speed, so that the mercury atom is excited and becomes an electric ion in the excited state. It is called a step. After a short time, the mercury in the excited state spontaneously falls back to the original state, and at the same time, it releases ultraviolet light, which cannot be used for lighting. So we coated some fluorescent materials on the inner wall of the lamp, Under the bombardment of ultraviolet light, the fluorescent material can emit more natural light after being excited, which can be used for our lighting.

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