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In the 1970s considerable expansion took place. In 1973 an area of about 100,000 m² was purchased in Zwiesel, on which a new plant was built. The annual turnover increased from 46 million DM in 1971 to 120 million DM in 1978. In 1979 the Schott Zwiesel Glaswerke AG employed about 1,900 workers and was one of Europe's largest cup glass ...
The international glass code is based on U.S. military standard MIL-G-174, and is a six-digit number specifying the glass according to its refractive index n d at the Fraunhofer d- (or D 3-) line, 589.3 nm, and its Abbe number V d also taken at that line.
After the Second World War, from 1947 to 1948 production of FIOLAX glass tubing began in Mitterteich. In 1961: SCHOTT decided to extend and modernize Mitterteich as the location for glass tubing production. In 1969: representatives of what is now Schott Glaswerke and the Glaswerke Ruhr AG agreed upon the foundation of Schott-Ruhrglas GmbH.
The glass technical laboratory founded in Jena in 1884 The first hexagonal segments for the main mirror of the Extremely Large Telescope (ELT) being cast by Schott. In 1884, Otto Schott, Ernst Abbe, Carl Zeiss and his son Roderich Zeiss founded the Glastechnische Laboratorium Schott & Genossen (Glass Technical Laboratory Schott & Associates) in Jena, Thuringia, Germany [2] [3] which initially ...
The regional glass industry around Zwiesel dates back to the 15th century (the glass hut of Rabenstein was founded in 1421). In 1836 the glass factory of Theresienthal was founded and in 1872 the master glass maker, Anton Müller, started to build the glass works Annathal, which later became the Schott-Werke.
There used to be an ISO standard (ISO/PAS IWA 8:2009) for glass clarity and freedom from lead and other heavy metals, but it was withdrawn. [13] Some producers of high-end wine glasses such as Schott Zwiesel have pioneered methods of infusing titanium into the glass to increase its durability and reduce the likelihood of the glass breaking. [14]
Historic pewter, faience and glass tableware. In recent centuries, flatware is commonly made of ceramic materials such as earthenware, stoneware, bone china or porcelain.The popularity of ceramics is at least partially due to the use of glazes as these ensure the ware is impermeable, reduce the adherence of pollutants and ease washing.
The millefiori technique involves the production of glass canes or rods, known as murrine, with multicolored patterns which are viewable only from the cut ends of the cane. [2] [9] A murrine rod is heated in a furnace and pulled until thin while still maintaining the cross section's design. It is then cut into beads or discs when cooled. [2] [9]
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