Is light produced by luminescent matter, and how is light produced?

No. Light is, by its very nature, an electromagnetic wave that covers a fairly wide range (from X-rays to the far infrared) of the electromagnetic spectrum, only at a shorter wavelength than ordinary radio waves. The visible light that the human eye can see with the naked eye is only a part of the entire electromagnetic spectrum.

When a beam of light is projected onto an object, phenomena such as reflection, refraction, interference, and diffraction occur.

Light rays travel in a straight line in a uniform and equal medium.

Light waves, including infrared, have shorter wavelengths and higher frequencies than microwaves, so it is a natural and inevitable trend to develop from microwave communication in electrical communication to optical communication.

Ordinary light: In general, light is composed of many photons, and in fluorescence (ordinary sunlight, lights, candles, etc.), there is no correlation between photons and photons, that is, the wavelength is different, the phase is different, the polarization direction is different, and the propagation direction is different.

When light is reflected, the angle of reflection is equal to the angle of incidence, in the same plane, on both sides of the normal, and the optical path can be reversed.

Light rays are obliquely rayed from one medium into another, creating refraction. If the density of the incoming medium is greater than the density of the medium in which the original ray is located, the angle of incidence is less than the angle of refraction. Conversely, if it is less than, the angle of incidence is greater than the angle of refraction.

But if the angle of incidence is 0, then in any case, the angle of refraction is zero and no refraction is produced. However, light refraction is still produced in the same inhomogeneous medium, and theoretically it can be shot in one direction without refraction, but because it is not clear and it is generally divided into several levels and is not a plane, it will produce refraction no matter how you look at it. For example, the bottom of a calm lake from the shore belongs to the first refraction, but the mirage is the second refraction.

The effect of the two common lenses is due to the first refraction.

Lasers – a new world in optics.

In a laser beam, all photons are interrelated, that is, they have the same frequency (or wavelength), the same phase, the same polarization direction, and the same propagation direction. The laser is like a disciplined photonic army, acting in unison, and thus extremely effective in combat. This is the main reason why many things can be done by lasers, but sunlight, lights, candles can't.

First of all, it is necessary to distinguish between the genus of luminescent substances you are talking about and not belong to light sources.

For the light emitted by a light source, the light is what they produce (light is an electromagnetic wave), such as the sun, a lit candle, an electric lamp.

If it is not a light source, such as a plane mirror, the moon, etc., they just reflect the light (reflect electromagnetic waves), and the light is not produced by them.

Yes. Light is produced by the fact that the electrons in the atom break free from the coulomb force in the nucleus and escape. Escaping electrons, in the form of segments.

Light is wave-particle duality. Like the white lamp in life, it uses the thermal effect of electric current to heat the filament, so that the electrons in the atom have enough energy to reach the minimum initial kinetic energy, and there is a chance to escape.

No, in simple terms, light can be seen as a wave or a particle.

What is light? How did it come about?

A light source emits light because the electrons in the light source gain extra energy. If the energy is not enough to make it jump to a more outer orbit, the electrons undergo an accelerated motion and release the energy in the form of a wave. If the transition is followed by just filling the vacancy in the orbital and going from the excited state to the stable state, the electron will not move.

Otherwise, the electrons jump back to their previous orbits again and release energy in the form of waves.

Classification: Resource Sharing >> Documents Report Sharing.

Problem description: Something**, help me.

Analysis: Light is energy, the amount of energy is determined by the frequency of photons, many energy transfer processes have the generation of photons, when the number of photons reaches a certain level and the frequency is in the range that people can feel, it becomes the light seen by the naked eye in life, the number of photons emitted when Betta decays is too small, we can't see, ultraviolet light, infrared frequency outside the range of human eye perception, we can't see

The sunlight we see is emitted by the thinnest photosphere of the sun, where the matter is in a plasma state, that is, the atom is ionized into nuclei and electrons, because the electrons are distributed according to the quantum energy level in the nucleus, when a free electron that was originally ionized enters the energy level of the atom, the electron energy decreases, and there is energy to conserve energy, this process produces a photon of a specific frequency, due to the continuous distribution of electron energy and the non-uniqueness of the quantum orbit, the sun emits photons in various frequency bands, There are also various colors in the human eye

Photons are carriers of energy, and light is represented as photons on a microscopic level, so the release and conversion of light and energy are inseparable

Are you talking about sunlight, the sunlight you see is the photons emitted by the reaction of the sun's inner core.

What is light? How did it come about?