Glass

Glass is an amorphous (non-crystalline) solid material. Glasses are typically brittle and optically transparent.

The most familiar type of glass, used for centuries in windows and drinking vessels, is soda-lime glass, composed of about 75% silica (SiO2) plus sodium oxide Na2O from soda ash, lime CaO, and several minor additives. Often, the term glass is used in a restricted sense to refer to this specific use.

In science, however, the term glass is usually defined in a much wider sense, including every solid that possesses a non-crystalline (i.e., amorphous) structure and that exhibits a glass transition when heated towards the liquid state. In this wider sense, glasses can be made of quite different classes of materials: metallic alloys, ionic melts, aqueous solutions, molecular liquids, and polymers. For many applications (bottles, eyewear) polymer glasses (acrylic glass, polycarbonate, polyethylene terephthalate) are a lighter alternative to traditional silica glasses.

Read more about Glass:  Silicate Glass, Structure, Glass Versus Supercooled Liquid, Glass Art

Other articles related to "glass":

Kosta Glasbruk
... Early production consisted of window glass, chandeliers and drinking glasses ... the forefront of new trends and technical developments, producing pressed glass, and in the 1880s setting up a new glass-cutting workshop ... manufacturers with a range of fine art glass and tableware by distinguished designers such as Vicke Lindstrand, artistic director from 1950-1973 ...
Mercury-Redstone 4 - Liberty Bell 7 - Window
... The Corning Glass Works of Corning, New York, designed and developed the multilayered panes that made up the new window ... The outer pane was 0.35 in (8.9 mm) thick Vycor glass ... The inner pane was made up of three inner glass panels bonded to make a single inner pane ...
Frosted Glass
... Frosted glass is produced by the sandblasting or acid etching of clear sheet glass ... It has the effect of rendering the glass translucent by scattering of light during transmission, thus blurring images while still transmitting light ... Decorative patterns may be imposed upon otherwise plain glass by using wax or other resist to retain transparent areas ...
Sodium Carbonate - Uses
... The manufacture of glass is one of the most important uses of sodium carbonate ... with silica and calcium carbonate and heated to high temperatures, then cooled rapidly, glass is produced ... This type of glass is known as soda lime glass ...
Glass Art - Museums
... historical collections in general museums, modern works of art in glass can be seen in a variety of museums, including the Chrysler Museum, the Museum of Glass in Tacoma, the ... has a collection of extremely detailed models of flowers made of painted glass ... The Blaschka Glass Flowers are still an inspiration to glassblowers today ...

Famous quotes containing the word glass:

    They are, as it were, train-bearers in the pageant of life, and hold a glass up to humanity, frailer than itself. We see ourselves at second-hand in them: they show us all that we are, all that we wish to be, and all that we dread to be.... What brings the resemblance nearer is, that, as they imitate us, we, in our turn, imitate them.... There is no class of society whom so many persons regard with affection as actors.
    William Hazlitt (1778–1830)

    A sudden violent jolt of it has been known to stop the victim’s watch, snap his suspenders and crack his glass eye right across.
    Irvin S. Cobb (1876–1944)

    We all drew on the comfort which is given out by the major works of Mozart, which is as real and material as the warmth given up by a glass of brandy.
    Rebecca West (1892–1983)