Glasses  Manufacturers, Traders, Suppliers

The term glass is derived from the Germanic word glasa "the shining, shimmering". Glasa is also the Germanic word for amber as an amorphous, non-crystalline solid. Many things in everyday life are made of glass, such as drinking glasses, windows and light bulbs. Today, entire facades of glass houses are already being built in some cases. Glass is usually produced by melting. Glass can also be produced by shock waves and the heating of sol-gel. Thermodynamically, glass is a frozen, under-cooled liquid. This term is applied to all substances that are melted and then cooled very quickly. During the solidification of the molten material into glass, crystals do form. But there is not enough time for the crystallization process, so that no crystal formation can take place. The transition area between the melt and the solid is around 600 degrees C for most types of glass. The most important property of glass is its optical transparency. However, its optical properties are very diverse. For example, there are clear glasses that are highly translucent. However, the addition of special materials during the melting process can block the light transmission. For example, clear glass can be made so impenetrable that ultraviolet light cannot pass through and heat radiation is blocked. The best known is the colouring of glass to control its permeability.