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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.
Glasses are classified using the Schott Glass letter-number code to reflect their composition and position on the diagram. Flint glass is optical glass that has relatively high refractive index and low Abbe number (high dispersion). Flint glasses are arbitrarily defined as having an Abbe number of 50 to 55 or less.
This list of glassware [1] includes drinking vessels (drinkware), tableware used to set a table for eating a meal and generally glass items such as vases, and glasses used in the catering industry. It does not include laboratory glassware .
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to be an ISO standard (ISO/PAS IWA 8:2009) for glass clarity and freedom from lead and other heavy metals, but it was withdrawn.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]
Jena glass (German: Jenaer Glas) is a shock- and heat-resistant glass used in scientific and technological applications, especially in chemistry. The glass was invented by Otto Schott in 1884 in Jena , Germany , where he had established Schott AG with Ernst Abbe and Carl Zeiss . [ 1 ]
The pattern was used for coffee sets (bowl, cup and saucer, platter, sugar, creamer) using an opaque glass of custard color with decorated bands. A milk glass version was called Orange Blossom. [60] Pyramid is a pattern name used by collectors for the Indiana Glass pattern number 610. This pattern was made from 1926 to 1932.
Only glass products containing at least 24% lead oxide may be referred to as "lead crystal". Products with less lead oxide, or glass products with other metal oxides used in place of lead oxide, must be labeled "crystallin" or "crystal glass". [4] In the United States it is the opposite - glass is defined as "crystal" if it contains only 1% lead.
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