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Glass transparent reasons

Glass is so common, of course, that most people want to believe that it is supposed to be like that. But exactly why the glass is transparent it? Why we can see out through the windows, rather than through a wooden window frame around it?
 
You may have noticed that most liquids and gases are transparent. Water, cooking oil, rubbing alcohol, air and natural gas, and so are transparent. That is because there is a fundamental difference between solids, liquids and gases. When a substance is solid, the arrangement between the molecules are usually orderly, very strong links with each other, so it is very hard substance. When a substance from a solid to a liquid, reducing the connection strength between molecules, molecules begin to form random state order. In substance vaporized in the process, you'll find coupling strength between molecules receded, the arrangement of molecules were completely random state.

Such molecules from ordered to random arrangement process, that is, light can be the most fundamental reason through liquids and gases. In most solid, the molecules are arranged in layers like a neat compact bricks, so light can not pass therethrough. So when irradiated onto a substance, light will be reflected, absorbed or scattered - In general, these three cases occur simultaneously. But when the substance becomes a liquid or gaseous molecules arranged neatly longer, some light can pass through the gaps or holes in. Material more disordered molecular arrangement, light passes through more easily.
Another factor in the occurrence of sub-atomic level. Molecules are any substance combination composed of many atoms formed together, usually with a lot of electrons of these atoms. When these photons with electrons effects may occur the following circumstances:
• electron energy absorbing photons and converting it into other form (usually converted into heat)
• Electronic absorb and store energy photons (this will cause luminescence, fluorescence is called the storage time is too short, the storage time is longer called phosphorescence)
• electron energy photon absorption and emission direction of incidence back (reflection)
• When the electron does not absorb the energy of the photons, photons continue along its path propagation (via)

In most cases, more than four cases during exposure to light objects can occur simultaneously. Different kinds of materials in a range of different electronic absorption energy. For example, many glass can block ultraviolet (UV). This is because the glass absorbs the energy of the electrons in the ultraviolet photons, but does not absorb visible light photon energy weaker. If the electronic absorption of visible light in any part of the energy, the transmitted light will be colored, depending on what kind of light is absorbed. In fact, any color of the object is determined by the electronic material absorbed photon energy level.

There are thousands of different types of substances can be used in the manufacture of glass. We can through the light quantity and kind of depends on the type and purity of the substance. High purity silica translucent very good, only a very small amount of light is absorbed, but usually there will be some reflection. You can see almost all of the windows so.
 
Other materials used in the manufacture of glass permeable or block certain types of light, such as ultraviolet light or even part of the visible light. You may have seen some other opaque color or black glass. Typically, the emergence of these colors are due to the presence, role and certain liquids or gases suspended in the glass which tiny particles of impurities among the same. The properties of the glass can also be changed by other methods, e.g., the filtered light of a particular wavelength. When manufacturing such a glass, it should be allowed to cool slowly enough to allow a certain molecular moiety or a crystalline structure. There are some plastic material which is easy and has good transmission and / or refractive properties are used to make glass for eyeglass lenses and magnifying glass and other products.


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