Glass in construction and architecture

Glass is known to humanity since ancient times, its opening is attributed to the Egypt of the 27th century BC. e. Glass is a hard, atmospheric material that is obtained by cooling mineral melt -freeing properties of solids. A prerequisite should be the content of glass -forming components in these melts (silicon oxides, aluminum, boron, etc.) and metals oxides (lithium, magnesium, potassium, lead, etc.).