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Before 1500, hereditary surnames (family names) were almost unheard except among a few, select elite families. For a long time after that, they were inconsistently used and only found in the upper strata (often urban) of society. As late as 1801, only 2.2% of the rural population in Western Norway had a hereditary surname. Starting in the 16th ...
Glass or Glaß is a surname with several sources. It can be Cornish, English, German, Russian/Slavic, Irish or Scottish. Many with the last name Glass, are of eastern European descent, where Glass is a shortened version of their original last name. It is also a Jewish surname, adopted by some Eastern European Ashkenazi in the nineteenth century ...
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
The caesium chloride structure adopts a primitive cubic lattice with a two-atom basis, where both atoms have eightfold coordination. The chloride atoms lie upon the lattice points at the corners of the cube, while the caesium atoms lie in the holes in the center of the cubes; an alternative and exactly equivalent 'setting' has the caesium ions at the corners and the chloride ion in the center.
Waterford Crystal is a manufacturer of lead glass or "crystal", especially in cut glass, named after the city of Waterford in Ireland.In January 2009, the main Waterford Crystal manufacturing base on the edge of Waterford was closed due to the insolvency of Waterford Wedgwood plc, and in June 2010, Waterford Crystal relocated almost back to the roots of glass-making in the city centre.
Pilkington glass in a Mercedes-Benz A trailer with Pilkington livery. The company was founded in 1826 as a partnership between members of the Pilkington and Greenall families, based in St Helens, Lancashire, England. [1] The venture used the trading name of St Helens Crown Glass Company. [2] The company grew to become the biggest employer in St ...
Beer bottles of different colors. Glass coloring and color marking may be obtained in several ways.. by the addition of coloring ions, [1] [2]; by precipitation of nanometer-sized colloids (so-called striking glasses [1] such as "gold ruby" [3] or red "selenium ruby"), [2] Ancient Roman enamelled glass, 1st century, Treasure of Begram
The neon sign is an evolution of the earlier Geissler tube, [11] which is a sealed glass tube containing a "rarefied" gas (the gas pressure in the tube is well below atmospheric pressure). When a voltage is applied to electrodes inserted through the glass, an electrical glow discharge results.