What made the glass ?
Glass - is an amazing material.Its pretty hard to cut, but it is easy to break.The most important distinguishing characteristic of glass - its transparency.Let's understand, due to what ingredients the glass gets its unique properties.
main ingredients of any glass are silica sand, calcium carbonate and limestone.All of these components should be mixed and put into an oven preheated to 1400-1500 degrees Celsius.As a result of this procedure, all the ingredients become mixed to a liquid mass which upon cooling acquire glass shape.
If you want to learn more about the process of creating glass, you should read our article: How to make glass.
glass creating history
But glass is not always done this way.The very first glass was all done without human intervention, for many millions of years before the beginning of our civilization.Scientists theorize that the first glass came from volcanic lava.
first people who began to produce the glass, making it kind of soda and sand.They mixed these ingredients and heated.This process is described by Pliny (lexicographer period of ancient Greek civilization).
Another point of view to explain the appearance of glass, offers a different scenario.According to it, the first glassy material was obtained in the process of firing pottery or during the smelting of copper.
Anyway, this discovery is of great importance in the development of human society.Glass can be compared with the discovery of fire or the invention of the wheel, and so on. d.
In the history of glass production can not but mention the great masters of Venice.It is they, the masters from the island of Murano, in the XIII century, was able to achieve absolute transparency and glass incredible subtlety.Since then, the glass production has increased dramatically.Glass products become works of art and luxury.
Only later came the first mirror with glass, colored glass, magnifying glasses, microscopes and telescopes.Today it is difficult to imagine a sphere of human activity, which would not use glass.