Glass is the most ancient object, which was found by man and is still in use.I found, because no man invented himself and made him the first time.Most likely, the first glass appeared thousands of years ago from volcanic lava.Now it is a substance called obsidian.How to make glass?Let's go back to the days when it was not.Gradually, people in knowledge of the natural environment, and have noticed that when mixed with sand natural soda and subsequent heating appears transparent substance.That is how they came to be known, and this new kind of material.This process was described by Pliny - Greek encyclopedic.It was from that moment and began the history of the use of glass, which has become in our lives today completely indispensable.For now, it is used everywhere.
However, there is also a different theory on how to make glass, or rather, as he made before.Some scientists have decided that the vitreous material was identified as a byproduct in the copper smelting or firing pottery.In human life, this product truly played a prominent role.It is difficult to overestimate its importance.Production of flat glass is comparable to such discoveries as the extraction of fire and the invention of the wheel.In the days of ancient Egypt it was decided to produce all kinds of jewelry.Later he learned to produce from the liquid container.From the thirteenth century, there was a sharp increase in the number of manufacturing glass.Venice became the center of its production.Masters became known technology for creating the eastern window, and then they began to develop and improve it.The transparency of glass is made possible by adding to it all sorts of impurities.Masters began to make out of it a different dish, which was very thin and graceful.In those days, glassware longer served as a luxury and jewelry.
If the question is about how to make glass, you are still interested, then we can talk about how it has found more and more new applications.The technology of its production was improved.It was invented by a mirror is made by coating one side of the amalgam.During the construction, too, began to use glass.Usually it is used in the construction of palaces and temples.And once learned to master his color, they began to decorate their windows, making the beautiful stained glass windows.And now widely used for glass fusing.And in science eventually began to use glass.With the opening of its ability to concentrate and scatter light, they were created by a variety of lenses made the telescopes and microscopes.These findings have become a giant step in the development of natural sciences - medicine, biology, astronomy, physics and others.None of the scientific direction without glasses can not be any activity.How do
glass?As once before sand.Basically, the silica sand contains presented here in the form of quartz crystals.When heated, it melts.If it is rapidly cooled, the minerals do not have time to crystallize, becoming transparent.For giving the product a particular color in a different metal oxides are added.In order to give maximum transparency of the glass sand is purified so that it includes virtually contained a quartz.
At the moment there are many ways to obtain a product with different properties: reinforced, toughened, mirroring, armored.As the basis and now serves as a simple sand that is processed.It is important to say that the sand in the world is enough, so the glass is not going out of our goods.
