A large modern float glass plant can produce 5, tons of glass sheet per week, and it can be operated 24 hours a day, days a year, for several years before serious repairs are apt to be needed. Float glass has uniform thickness and bright fire-polished surfaces that need no grinding or polishing.
Glass: Nature, Structure, and Properties
The drawing of glass fibers had long been of interest, but glass fibers found little use until the twentieth century. Articles such as wedding gowns made from glass fiber cloth were largely curiosities, made for show rather than use. In the s glass researchers learned to feed molten glass into platinum bushings having hundreds of tiny holes. Fine glass filaments of 10 to 50 microns were rapidly drawn downward and assembled as bundles or strands of glass fiber.
Today a major use of glass cloth or filaments is to strengthen the plastics used to make fiberglass-reinforced composites.
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These composites are widely used in making boats, from canoes to yachts, and bodies for cars, such as the Corvette. An even larger poundage market is that of glass wool insulation. In a process much like that used to make cotton candy, fine glass fibers are spun, sprayed with an organic bonding agent, and then heat-cured and cut into mats of various sizes, to be used for insulating buildings and appliances. Surely the most significant glass fiber development in recent times is fiber optics, or optical wave guides.
These ultrapure, very fine glass fibers are a most crucial part of modern communications technology, wherein glass fibers link telephones, televisions, and computers. A single strand of glass optical fiber that has a protective plastic coating looks much like a human hair. The glass fiber has an inner core of ultrapure fused silica, which is coated with another silica glass that acts as a light-refractive barrier.
Lasers are used to convert sound waves and electrical impulses to pulses of light that are sent, static-free, through the inner glass core. Glass fibers can transmit many times more information than can be carried by charges moving in a copper wire. In fact, one pound of glass optical wave guides can transmit as much information as can be transmitted via tons of copper wire.
Today millions of miles of optic fibers are crisscrossing not only the United States, but also the entire planet. Windows need to be cleaned. In a new glass that largely cleans itself when it comes into contact with rain was introduced. This low-maintenance glass was developed by Pilkington Glass Works, the company that invented the float process. It is made by depositing a microscopically thin coating of titanium dioxide TiO 2 on hot sheet glass during its manufacture in the float process.
As dirt collects on the window, the Sun's ultraviolet rays promote a catalytic reaction at the glass surface that breaks down and loosens surface dirt. Brooks, John A.
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New York: Golden Press. Douglas, R. A History of Glassmaking. Oxfordshire, England: G. Kampfer, Fritz, and Beyer, Klaus G. Glass: A World History. London: Studio Vista. Kolb, Kenneth E. Glass: Its Many Facets. Hillside, NJ: Enslow. Phillips, Phoebe The Encyclopedia of Glass.
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New York: Crown Publishers. Rogers, Frances, and Beard, Alice New York: Lippincott. Toggle navigation. Kenneth E. Bibliography Brooks, John A. Other articles you might like:. Follow City-Data. Tweets by LechMazur. Also read article about Glass from Wikipedia. User Contributions: 1. Thomas Cotter.
Book Glass: Nature, Structure, And Properties
Very useful reference on glass chemistry for the layman. Thanks for being there. Steve Krueger. I have a question for you. We would like to use the jar to hold sugar or other raw, dry foods in the kitchen. Is there any likelihood that the chemicals in the glass that make it change color could transfer to the stored food? Art Mueller. Can you explain why various colors melt at different rates? And why they do so. Do you have a sheet or chart? Sy mifuel. When was this site last updated?
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Glass : Nature, Structure, and Properties. Glass Nature, Structure, and Properties. All rights reserved. Subjects: Glass. Note: Translation of: Glas. Physical Description: xiv. Results 1 - 21 of 21 Glass: Nature, Structure, and Properties Paperback by Horst Scholze and a great selection of related books, art and collectibles available. Glass: nature, structure and properties by Horst Scholze. Glass: nature, structure and properties.
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