What is the principle of light passing through glass, why can light penetrate glass, and what is the

Glass is made up of some very small crystals, and these crystals are translucent, so the glass is also translucent.

You must ask: is that not the same as not saying.

So to tell you, the reason why these crystals transmit light is related to our human eyes, that is, we judge whether it is transparent, is to see whether our eyes can feel the light behind the crystals, this is simple, it is this kind of crystal, it neither absorbs any color of light, nor reflects any color of light, (you can think of tinted glass and mirrors, tinted glass is to let only one color of light through, and other colors of light to absorb the color of the glass we see.) , in fact, is the color of the light through which this glass passes. Mirrors are easy to understand, the mercury on the mirror reflects all the visible light, so there is no light behind the mirror).

From the point of view of physics, we know that no matter what wave moves in one direction in an S-shaped orbit, then the frequency of its vibration is different, and the distance it travels is different for each vibration, and the wavelength of the light wave can just bypass the crystal of the glass, and reach our human eyes, our retinoids can feel the light, and we think that the glass is transparent.

This can be given as an example to prove that our current radio waves, its penetration is very good, what human body, brick wall, wood and the like can pass through, and metal, it can't pass through, will be reflected back, (like a mirror reflecting light) Here, to see whether the radio waves can pass through a certain object, it is necessary to use the radio to receive the device, this device is like our human eyes, it can "see" the radio waves, just like the eyes can see the light, then the object (such as the brick wall) can transmit radio waves, just like whether glass can transmit light or not. On the one hand, it depends on whether the vibrational frequency of this energy can bypass the object, and on the other hand, it has an absolute relationship with the object that can perceive this energy.

I don't know if you get it.

Because glass is transparent to visible light.

<>1. Light can decompose the structure of any substance molecule, and can penetrate many substances, such as X-rays, to penetrate the human body. Glass is a substance with a high density, and high-density substances are easy to be penetrated by light, not rotten only glass, jade, agate, diamonds, etc. are easy to penetrate (including liquids).

2. Light is an electromagnetic wave, when it is incident on any medium or transmitted in the medium, it is actually the microscopic particles in the medium that absorb its energy, and polarization and forced vibration occur to form an electric dipole oscillator, and the vibrating electric dipole emits a secondary wave. The light we see through the leaking glass is no longer the original light, but the scattered secondary waves emitted by the microscopic particles inside the glass under the action of incident light.

An important reason: no matter how solid a substance is, if you look at it from the inside of the atom, it is actually empty. Because inside the atom, the volume of the nucleus and the electron together is less than 1/1000000000 of the volume of the atom.

Moreover, there is no evidence that atomic nuclei and electrons cannot be passed through by photons! So, transparency is normal!

To understand this complex question, we must first ask the following question: Why are some substances opaque?

For opaque substances, we can divide them into four main categories:

1. Opacity due to the blocking effect of free electrons: This is the reason for the opacity of metals.

2. Opacity caused by substances that can absorb light: the excitation energy of the electrons of the molecules of such substances is relatively low, just in the visible range, and the molecules often have the structure of benzene ring, benzoquinone, benzidine or other conjugated systems, which can reduce the excitation energy of electrons, so that electrons are prone to transition and absorb the energy of photons. In this way, the light is absorbed.

3. Opacity caused by the destruction of the structure of the transparent substance. For example, glass is transparent, while glass powder is opaque; Ice is transparent, whereas ice is opaque when it is smashed. If a substance does not conform to its structural characteristics, then it can pass light, but if it has a lot of small voids in its structure, then it is white.

This is the reason why white objects are opaque.

The result of a mixture of causes. The opacity of many objects in reality is caused by this.

If there are no free electrons in the structure of a substance, there are no easily excited electrons, and the structure of the substance is very compact, and there are no many pores and other conditions. That matter can pass through photons, i.e. it is transparent. So the glass is transparent!