Satin use in ballet. Other uses include interior furnishing fabrics, upholstery, and bed sheets . Originally, during the Middle Ages, satin was made of silk; consequently it was very expensive, used only by the upper classes. Satin became famous in Europe during the twelfth century. The name derives its origin from the Chinese port city of Quanzhou, whose name in (medieval) Arabic was Zayton. During the latter part of the Middle Ages, it was a major shipping port of silk, using the maritime Silk Road to reach Europe. It was mostly used in the Arabian countries. Fabrics created from satin weaves
Dark fibre these systems much less susceptible to interference. Dark fibre A dark fibre or unlit fibre is an unused optical fibre, available for use in fibre-optic communication. "Dark fibre" originally referred to the potential network capacity of telecommunication infrastructure. Dark fibre may be leased from a network service provider. Much of the cost of installing cables is in the civil engineering work required. This includes planning and routing, obtaining permissions, creating ducts and channels for the cables, and finally installation and connection. This work usually accounts for most of the cost of developing fibre networks. For example, in Amsterdam's citywide installation