A vitreous plane upon which to display a fleeting show for man's disillusion given. The King of Manchuria had a magic looking-glass, whereon whoso looked saw, not his own image, but only that of the king. A certain courtier who had long enjoyed the king's favor and was thereby enriched beyond any other subject of the realm, said to the king: "Give me, I pray, thy wonderful mirror, so that when absent out of thine august presence I may yet do homage before thy visible shadow, prostrating myself night and morning in the glory of thy benign countenance, as which nothing has so divine splendor, O Noonday Sun of the Universe!" Please with the speech, the king commanded that the mirror be conveyed to the courtier's palace; but after, having gone thither without apprisal, he found it in an apartment where was naught but idle lumber. And the mirror was dimmed with dust and overlaced with cobwebs. This so angered him that he fisted it hard, shattering the glass, and was sorely hurt. Enraged all the more by this mischance, he commanded that the ungrateful courtier be thrown into prison, and that the glass be repaired and taken back to his own palace; and this was done. But when the king looked again on the mirror he saw not his image as before, but only the figure of a crowned ass, having a bloody bandage on one of its hinder hooves -- as the artificers and all who had looked upon it had before discerned but feared to report. Taught wisdom and charity, the king restored his courtier to liberty, had the mirror set into the back of the throne and reigned many years with justice and humility; and one day when he fell asleep in death while on the throne, the whole court saw in the mirror the luminous figure of an angel, which remains to this day.
A hard, brittle, translucent, and commonly transparent substance, white or colored, having a conchoidal fracture, and made by fusing together sand or silica with lime, potash, soda, or lead oxide. It is used for window panes and mirrors, for articles of table and culinary use, for lenses, and various articles of ornament.
A product of quartz sand, soda or potash, and lime. The silica is the main component. Soda or potash, alkalies, limit the melting point of the silica. Lime adds atrength to glass as it cools, preventing brittleness. The ingredients are melted at about 1,200 C.,at which time the atoms of the different components become fluid and distribute themselves randomly, proper cooling freezes that atoms in their random arrangment.
a uniform amorphous solid material, usually produced when a suitably viscous molten material cools very rapidly, thereby not giving enough time for a crystallization. Common glass is mostly amorphous silicon dioxide (SiO2), which is the same chemical compound found in quartz, or in its polycrystalline form, sand; in its pure form, glass is a transparent, relatively strong, hard-wearing, brittle, essentially inert, and biologically inactive material which can be formed with very smooth and impervious surfaces.
Hard, transparent or translucent substance made from the fusion of silica, such as sand or flint, and an alkali, such as potash or soda. When heated to about 1100Â°C (2000Â°F) the ingredients fuse together and become molten. In this state the metal, as it is technically called, can be shaped by blowing, casting, moulding or pressing. Glass can be coloured by adding metallic oxides to the frit.
Glass is a hard material with non-crystalline, random structure like a liquid. It is commonly made by combining materials such as silica, potash, and lead oxide at a high temperature in order to allow the materials to melt and fuse together. When cooled rapidly, the substance becomes rigid . Glass is often classified as a supercooled liquid rather than a regular solid.
A hard, brittle substance, usually transparent, made by fusing silicates with soda, lime, etc. Glass, an interesting substance, in its solid state, is not crystaline, and is considered to be a super-cooled liquid.
Any of a large class of materials with varying optical and mechanical properties that is generally hard, brittle and translucent or transparent and considered to be a super cooled liquid, as opposed to a solid. Glass fibers, when mixed with various resins, are the main ingredients in a fiberglass product.
A homogeneous material with a random, liquidlike (non-crystalline) molecular structure. The manufacturing process requires that the raw materials be heated to a temperature sufficient to produce a completely fused melt, which, when cooled rapidly, becomes rigid without crystallizing.
An inorganic, amorphous substance that is in a unique physical state. It cools to a rigid state, however, without crystallization. A variety of constituents may be used to create it. The jeweler usually encounters glasses that are mixtures of silica fused with a variety of other substances that impart various desirable qualities such as a low melting point, brilliancy and opacity. Glass is available in many, if not all, colors of the rainbow.
In fiber-optic communication, any of a number of noncrystalline, amorphous inorganic substances, formed, by heating, from metallic or semiconductor oxides or halides, and used as the material for fibers. Learn more about Glass...
Any of a large class of materials that solidify from the molten state without crystallization, are generally transparent or translucent, and are regarded physically as super-cooled liquids rather than true solids
A super-cooled liquid with no crystalline structure and varying composition, primarily silica sand with soda or potash and lime, which is added to facilitate a lower melting temperature. The color in glass is created with metallic oxides that are dissolved into the molten glass.
An inorganic transparent material composed of sand (silica), soda (sodium bicarbonate), and lime (calcium carbonate) with small quantities of alumina, boric or magnesia oxides. Available Styles: Clear, Bronze, Grey and Tinted.
Most commercial glass is made from a molten mixture of soda ash, sand, and lime. An excellent material for re-using and recycling. The recycling process can be repeated endlessly without any loss of quality.
Any substance having a non-ordered, non-crystalline molecular structure when cooled to a point below transformation temperature (Tg). Most common glasses are silica-based and melted with soda, lime and sometimes other components (boron, alumina and potassium). Most glasses are also hard, shiny and transparent or translucent.
hard, brittle, generally transparent or translucent material typically formed from the rapid cooling of liquefied minerals. Most commercial glass is made from a molten mixture of soda ash, sand, and lime.
In the days of tall ships the barometer was a glass vessel with a thin stem. The fluid in the glass (in most cases water) would move up and down the stem as the pressure of the surrounding atmosphere changed. These movements were used to predict changes in the weather.
Bottles or jars made of clear, green or brown glass. The following types of glass are generally not recyclable, though some may be recyclable if there are local markets: non-container glass, plate glass, automotive glass, light bulbs, blue glass, porcelain and ceramic glass.
A state of matter intermediate between the close-packed, highly ordered array of atoms in a crystal and the poorly packed, highly disordered array of atoms in a gas. Most glasses are supercooled liquids but there is no clear dividing point in the range of properties between the metastable and stable states. The distinction between glass and liquid is on the basis of viscosity, or how much internal resistance the material offers to flow.
The window on the door(s) of your Hearthstone gas or wood stove is not actually glass at all. It is a technologically advanced material, able to withstand temperatures of over 200 degrees Fahrenheit and rapid temperature changes with no change in strength or durability.
the see-through material used to cover and protect the poster or photograph. There are different types of glass used: glare and non-glare, each of which has its own advantages and disadvantages. Clear plastic is sometimes used in less-expensive frames.
This is a class of insurance normally provided as part of a package for offices, shops, and hotels although separate insurance can be arranged when required. The basic cover is for breakage of fixed glass from any cause (although there are usually some exceptions, such as damage to frames or framework). Cover can also be obtained for showcases, neon signs, ornamental and lettered glass.