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Why is glass transparent?

Update:21 May 2020
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Why is glass transparent? It turns out that objects sho […]

Why is glass transparent? It turns out that objects should be transparent, opaque is the reason

We know that human eyes can see things because we see the light reflected from this thing. In other words, if the object is to be transparent, the object cannot absorb light or reflect light. What is the principle of the internal structure of an object?

Why is glass transparent? It turns out that objects should be transparent, opaque is the reason

Before this, we have to understand a concept, that is, the Big Bang. This argument holds that the universe was originally a dense singularity, that is, a point smaller than an atom. In other words, the entire universe can now be compressed into a point smaller than atoms!

Why is glass transparent? It turns out that objects should be transparent, opaque is the reason

Is incredible? In fact, if you know something about the internal structure of an atom, you will know that no matter what substance, if you look at it from the inside of the atom, it is actually empty. Inside the atom, the volume of the nucleus and electrons add up to less than one billionth of the atomic volume, and even there is a huge space inside the nucleus that is empty.

Why is glass transparent? It turns out that objects should be transparent, opaque is the reason

The so-called color is empty, empty is color. Matter is actually empty, and it is normal for light to pass through. So if we want to know why matter is transparent, let us first understand why so many things are opaque?

 

For opaque substances, we can summarize the following reasons:

Reason one: due to the blocking effect of free electrons inside the atom, the object is opaque. The opacity of metallic substances is basically the reason.

Why is glass transparent? It turns out that objects should be transparent, opaque is the reason

Reason two: The opacity caused by the substance that absorbs light. The excitation energy of the electrons of the molecules of such substances is relatively low, just in the visible light range. Such molecules often contain benzene ring, benzoquinone, benzidine or other conjugated structures. This kind of structure can reduce the excitation energy of electrons, make the electrons easily transition and absorb the energy of photons, so that the light is absorbed, resulting in opaque objects.

Cause three: opacity caused by the destruction of the structure of a transparent substance. For example, ice and ice are transparent, but when they are smashed into powder, they become opaque.Nail Polish Bottles Wholesale

Why is glass transparent? It turns out that objects should be transparent, opaque is the reason

If a substance's structural characteristics do not meet the reasons one and two, generally it can pass through light. But if there are many small gaps in its structure, it will reflect all kinds of light, it is white. This is why white objects are opaque.

Reason four: In fact, the reason is the above reason, but it may be the result of a combination of multiple reasons. In reality, the opacity of most objects is actually caused by this comprehensive reason.

Why is glass transparent? It turns out that objects should be transparent, opaque is the reason

If a substance has no free electrons in its structure and no easily excited electrons, and the structure of the substance is very compact, without many pores and other conditions, then this substance can pass photons. We say that this object is transparent.

Why is glass transparent? It turns out that objects should be transparent, opaque is the reason

Glass is generally composed of silica and silicate. These molecules have relatively weak absorption of light. Moreover, the special structure composed of silicon atoms and other atoms is conducive to the passage of light waves, so light easily passes through the glass body, which is why the glass is transparent.