Why do hot objects emit light

The energy of the object with a very high temperature is also very high, which causes most of the electrons in its atoms to not be in the ground state, but in a higher energy level state, the reason why it will be at a higher energy level is because the internal energy of the atom is very high, which leads to the transition of electrons to a higher energy level, when the electrons that jump to a higher energy level will release energy when they return to the ground state, and the form of release is to emit light, in a high-temperature object, most of the electrons are in the transition and return to the ground state, so the high-temperature object will emit light.

At high temperatures, the number of free electrons increases, and the attraction of high-potential energy electrons in the nucleus decreases to low-potential electrons, releasing photons. Electrical energy is converted into light energy, photoelectric effect. Sling the bull.

It's called.

Thermal radiation. Radiating electromagnetic waves. Light is also an electromagnetic wave. Electron from.

Excitted state. Transitioning to a lower energy level releases electromagnetic waves, and when the frequency of the electromagnetic waves is in the visible band, we can see objects emitting light.

Why do some objects emit light when the temperature is high enough to a certain extent? What is the essence of luminescence?

It is because these objects are not absolutely 0 degrees at all, and these objects will also produce some radiation in the process of motion, and then the stronger the radiation, the faster the electrons will move, and some visible light will also be generated.

This is because these objects themselves contain luminescent substances, so they emit light when they encounter high temperatures.

Because the temperature of these objects is high, internal energy will be generated, and internal energy will also produce kinetic energy, so the movement of atoms inside will excite heat and glow.

The main reason is that the thermal radiation of living objects is increasing, and when it reaches a certain point, it will have a red color.

Objects are made up of particles, especially metal objects, and when heated at high temperatures, the particle activity of metal objects will be more intense. So it will glow.

Some objects emit light at a certain level of high temperature, which is the embodiment of an illusion. In fact, in nature, light can be divided into visible light and invisible light, and sometimes even if you don't see the existence of light, in fact, the object is always shining. In the case of the human body, it does not appear to glow on the surface, but in fact the human body emits infrared light all the time.

If you use an infrared instrument, you can easily see that the human body is glowing all the time.

It is because the temperature of the object is too high, there will be a certain amount of heat radiation, and light is also a kind of radiation.

This is actually an illusion of our human beings, in fact, light is divided into two types: visible light and invisible light.

Categories: Science & Engineering.

Problem description: For example, the filament glows when it is energized!

Could it be that photons are created when electricity is applied?

Analysis: The temperature increases, the energy of the electron increases, the quantitative change causes the qualitative change, the electron energy is high to a certain extent, and the transition will occur, the electronic transition refers to the outer electron absorption energy of the atom exceeds the energy level of the orbit, and jumps to the orbit farther away from the nucleus, but such electrons are unstable, easy to release energy and return to the original orbit, this part of the energy released is manifested as luminescence.

Countless atoms emit photons, and the phenomenon of light emitting light occurs. When the energy is low, the emitted electromagnetic waves will appear as invisible low-energy light, such as radio waves, microwaves, infrared rays, etc., which can be measured by instruments; When the energy is high, visible light is emitted; When it is higher, it emits high-energy invisible light that exceeds the frequency of visible light, such as ultraviolet rays, X-rays, rays, etc.

Because the temperature is too high, the thermal effect will occur, then the heat will be converted into a certain amount of light energy, and it will start to glow.

In fact, it is similar to thermal expansion and cold contraction. If the temperature is high, it will actually expand, and if it expands so much, it will break through the boundaries of space. will glow.

Because the temperature of the object is higher than absolute zero, electromagnetic waves are radiated.

When the temperature of the object rises to a certain standard, the emitted electromagnetic waves can be directly seen by the human eye, so we can see the luminescence. It is a principle of energy release.

This means that all objects can emit light, but most of this light is invisible to us. When the temperature of some objects reaches a certain level, the electromagnetic waves emitted by them can be captured by the human eye, so it is not that the temperature of the object is high. It only glows to a certain extent, but our eyes can't catch these glowing objects.