Glass history. From glass weapons to glasses of portholes of spaceships

Even in the Stone Age, people learned to process volcanic glass - obsidian. Arrows, axes and other cutting tools made it from it! From that distant time, this unique material has evolved next to a person. Today, glass is an integral part of each room, used in external and interior decoration. It increases light flows as much as possible and expands the space. The possibilities of this material are limitless. It is durable, environmentally friendly, durable, not fuel, relatively easily amenable to cutting and processing. This allows you to make stained -glass windows, door leafs, jewelry ... Optical devices, lenses, telescopes, glasses would not appear in our life without opening glass. Today, thanks to the huge mirror telescopes, we have the opportunity to look into other galaxies! For a modern person, the glass has become ordinary, but we want to tell you as much as possible about this fabulous material that is born in the fire of the fire. Read!