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Evidence of glass during the chalcolithic has been found in Hastinapur, India. [24] The earliest glass item from the Indus Valley civilization is a brown glass bead found at Harappa, dating to 1700 BCE. This makes it the earliest evidence of glass in South Asia. [3] [25] Glass discovered from later sites dating from 600 to 300 BCE displays ...
The Melyer family is believed to have continued making glass into the third and fourth generations. If true, glass may have been produced in Manhattan from 1645 to about 1767. [50] Johannes Smedes, [Note 6] another New Amsterdam glassmaker, received a portion of land in 1654 adjacent to what became known locally as "Glass-makers Street". [51]
Indiana had its own gas boom, and East Central Indiana changed from an "agricultural district" to industrial. Glassmaking was one of the industries that moved to Indiana. In 1880, the state ranked eighth in glass production. By 1890, it ranked fourth. In terms of the number of glass factories, the state had four in 1880 and 21 in 1890. [85]
Soda–lime glass (a.k.a. lime–soda glass or lime glass) was re–discovered in 1864 by William Leighton of the J. H. Hobbs, Brockunier and Company glass works in Wheeling, West Virginia. The glass made using his formula had good enough quality that the company could compete in the high-end of the glassware market. [29]
Glass is an important material in scientific laboratories for the manufacture of experimental apparatus because it is relatively cheap, readily formed into required shapes for experiment, easy to keep clean, can withstand heat and cold treatment, is generally non-reactive with many reagents, and its transparency allows for the observation of ...
Running for governor, Democrat Beto O'Rourke said in a November rally that 70% of Texas fourth graders cannot read at grade level. Is he right?
Pages in category "History of glass" The following 89 pages are in this category, out of 89 total. ... 19th century glass categories in the United States;
A 2020 analysis of science curriculums in all 50 states by the National Center for Science Education and the Texas Freedom Network Education Fund gave Texas an F grade for how well schools in the ...