If sunlight is white light, in physical terms, what light does an energy saving light bulb emit?

The poles of the energy-saving lamp are ordinary tungsten filaments. When the tungsten filament is energized and heated, it emits electrons. An electric field is formed by adding a relatively high voltage to both sides of the lamp, and these electrons will be accelerated in the lamp, forming an electron flow with a certain speed and energy.

The lamp is pumped into a vacuum and filled with mercury, which we call mercury. When the energy-saving lamp is energized and heated, the mercury evaporates from a liquid state to a gaseous state. Mercury atoms in a free state are formed.

The electrons in the electron flow hit the mercury atom at a certain velocity, causing the mercury atom to be excited and turn into an ionized state. It is said that there is a step, and the mercury in the excited state spontaneously falls back to its original state after a short period of time, while releasing ultraviolet light, which cannot be used for illumination. So we coated some fluorescent substances on the inner wall of the energy-saving lamp, and under the bombardment of ultraviolet light, the fluorescent substances can emit more natural light after being excited, which can be used for our lighting.

There is also the sunlight you mentioned, sunlight is due to the intense light radiation produced by the sun's thermonuclear fusion reaction, sunlight contains various wavelengths of light: infrared, red, orange, yellow, green, cyan, blue, violet, ultraviolet, etc., these lights are shot to the earth through a long distance, and then filtered by the atmosphere to the ground, its visible spectrum energy distribution is uniform, so it is white light.

The so-called fluorescence refers to the substance that can emit light under excitation conditions, and the reason why energy-saving lamps can save energy is because of their principle Electronic energy-saving lamps, also known as energy-saving bulbs, electronic bulbs, compact fluorescent lamps and integrated fluorescent lamps, refer to the lighting equipment that combines fluorescent lamps and ballasts (ballasts) into a whole. The size of the energy-saving lamp is similar to that of the incandescent lamp, and the interface with the lamp holder is also the same as that of the incandescent lamp, so the incandescent lamp can be replaced directly.

After passing through the prism, due to different wavelengths, different angles of refraction are produced, so we see that the sunlight is separated into seven colors of light. The energy-saving lamps we see are also white light, which is also composed of seven colors of light, and of course can also be separated.

The light rays of sunlight are different from the rays emitted by light bulbs and the energy of various wavelengths of light.

Sunlight has a wide range of energy, including infrared and ultraviolet rays that are invisible to the human eye, and may also have unknown energy.

The light energy emitted by an electric bulb is very narrow relative to sunlight. For example, in incandescent lamps, red light has more energy and blue-violet light has less energy. Fluorescent lamps have less red light, more blue and violet, and so on.

Therefore, in addition to ultraviolet damage** but blind closure is sterilization, it is beneficial to all things. It is that all things are born and grind, and their fingers are cracked and grow by the sun! And the light bulb emits a funny light far from it.

Sunlight mirrors and light bulbs emit light of various wavelengths with different amounts of light energy.

The energy of wide sunlight, including infrared and ultraviolet rays, which are invisible to the human eye, may be an unknown energy.

The energy bulb emits light through a very narrow relative sunlight. For example, the energy of incandescent, red and blue-violet energy. Fluorescent red, small, blue-purple, and so on.

So, in addition to ultraviolet disinfection all the first brother acres of things in the ** outside the damage of the forest is beneficial. Everything grows on the sun! The light emitted by the bulb is much weaker.

1.Sunlight consists of three parts: infrared, visible, and ultraviolet, of which infrared and ultraviolet light are invisible. Continuous noise glows. The color rendering index (the coefficient that reflects the true color of an object) is 1

That is, it reflects 100% of the color of the object.

2.Energy-saving lamps use ballasts to emit electrons to produce ultraviolet light, which is absorbed by the trichromatic powder on the lamp and converted into visible light. The light emitted is almost always visible light. The color rendering index of 85%-90% can show the real color of the object more realistically.

3.The light of energy-saving lamps is basically visible light, and normal energy-saving lamps (trichromatic powder tubes) will not have ultraviolet rays. Except for lamps of questionable quality.

The projection formed by the rays of light is called a parallel projection; The projection formed by the radial rays of the center is called the center projection

The projection formed by sunlight is a parallel projection, and the projection formed by the light emitted by a flashlight and a light bulb is a central projection, so the answer is: parallel projection, central projection