Glass crystal

Lead oxide is used in producing fine "crystal glass" and "flint glass" of a high index of refraction for achromatic lenses. The nitrate and the acetate are soluble salts. Lead salts such as lead arsenate have been used as insecticides, but their use in recent years has been practically eliminated in favor of less harmful organic compounds. 

Inorganic product of a fusion reaction. Material forms on cooling to a rigid state without undergoing crystallization. Glass is typically hard and brittle and will fracture conchoidally. 

Denisov, V. N., Mavrin, B. N. and Podobedov, V. B. (1987) Hyper-Raman scattering by vibrational excitations in crystals, glasses and liquids. Phys. Rep., 151, 1-92. 

You can bring lead home in the dust on your hands or clothes if lead is used in the place where you work. Lead dust is likely to be found in places where lead is mined or smelted, where car batteries are made or recycled, where electric cable sheathing is made, where fine crystal glass is made, or where certain types of ceramic pottery are made. Pets can also bring lead into the home in dust or dirt on their fur or feet if they spend time in places that have high levels of lead in the soil. 

Discovery of Spinodal Decomposition (SD) Prior to Crystallization—Glass Crystallization Near Tg... 

Non-SI (unacceptable and obsolete) units, l xxiv-xxv 2-26 xxii-xxiii Nonsilicate crystals, glass-ceramics based on, 12 641-642... 

Oxidative damage, role of ascorbic acid in preventing, 25 769 Oxidative degradation, 70 682 of gasoline, 72 399-400 Oxidative dehydrogenation, 23 342-343 Oxidative pyrolysis, 27 466 Oxidative stability, of olefin fibers, 77 229 Oxidative stability test, 72 400 Oxide crystal glass-ceramics, 72 641 Oxide-dispersion-strengthened alloys, 77 103-104... 

At present, lead is used for production of accumulators, petrol, crystal glass, matches, paints, pesticides, and printing types, hunting ammunition (with arsenic), and anti-corrosive coatings. It is also used in the chemical. 

It is evident that, in the specimen analysed by Dumas, the potassa had been separated from the glass at the instant of crystallization. It is equally manifest that while no simple proportion con be traced between the elements of the transparent glass, one observes, on the contrary, in the crystallized glass a clear and well-defined composition-, for the oxygen of the alumina is about one-third of that of tbe potassa and of the limo, and the oxygep of these -three bases is pretty exactly... 

Physical state and its description. The physical state of each substance is indicated, in the text and in column 2 of the table, as gaseous, liquid, crystal, glass, colloidal, or in aqueous or other solution. (See the list of abbreviations on page 14.) All states are for a pressure, or a fugacity, of one atmosphere and a temperature of 18°, unless otherwise indicated. 

Rice R. W., 1979, Internal stress dependence of the hardness of crystallized glasses, J. Mater. Sci., 14, 2768-2772. 

Because all glasses are clearly solids, the names liquid crystal glass or plastic crystal glass are awkward. The terms LC-, PC- and CD-glass thus stand for glass obtained by quenching a liquid crystal, plastic crystal, or condis crystal, respectively. 

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