What is glass? - FamousWhy
FamousWhy
USA
Famous People Famous Regions Famous Articles Famous Software FamousWhy Web Services Famous Forum Submit Content
|


Statistics:
Visits: 257
Votes: 0
Fame Riser
          
Fame Rank
N/A
Fame Riser
create pool

 

Articles


Ask a Question about What is glass?

Famous Tags


software   science   technology   internet   computers   tehnology   computer   application   chemical   energy   space   email   mobile   antivirus   fuel   spacecraft   windows   files   tool   website   photos   earth   management   browser   company   human body   information   explore   editor   astronomy   free   nature   water   development   people   atomic  

All Tags


 

What is glass?

 Q:   Ask a Question about What is glass?       
What is glass? Glass forms when melted solid materials are cooled quickly, so that they do not produce crystals. There are many types of glass, but the transparent glass that is most familiar to us is a very useful material. It is resistant to most corrosive substances, and it is a very good electrical insulator and heat insulator. Glass is stronger than most metals, but because it is brittle it shatters easily.

The most common forms of glass are made from a melted mixture of silica (sand), sodium oxide and calcium oxide. Lead crystal is a form of glass in which the calcium oxide is replaced by lead oxide. The most heat-resistant glass can be made from pure silica.

Silica and limestone are melted in a furnace. The molten glass can be used to make bottles when it is blown into a mould. Flat glass sheets are made by allowing the hot, liquid glass to float on a pool of molten tin, which is perfectly flat, and then cooling it gradually. As it hardens, the glass is passed through rollers and cut to size.


Tags: silica, glass



Category: Science & Tech  - ( Science & Tech Archive)

Date Added: 13 December '11


Add a link to this page on any related website, blog or forum using this code :