Glass

What is glass? Glass is a transparent [|amorphous solid] and the main material of glass was made from Na2O·CaO·6SiO2. When it was melted, it was formed by a continuous network structure. In rough, there are about 7 kinds of glasses.
 * Glass**
 * 1) 1. Plate glass[[image:plate.jpg width="168" height="118" align="left"]]




 * 1) 2. Obscure glass[[image:Obscure-Glass[1][1].jpg width="197" height="120" align="left"]]


 * 1) 3. Hollow glass[[image:Hollow_Glass_Microsphere[1].jpg width="168" height="132" align="left"]]
 * 2) 4. Toughed glass[[image:Toughened-Tempered-Glass-DF-02-[1].jpg width="152" height="123" align="left"]]
 * 3) 5. Clip silk glass[[image:Clip_silk_glass.jpg width="152" height="123" align="left"]]
 * 4) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 3. Hollow glass[[image:Hollow_Glass_Microsphere[1].jpg width="168" height="132" align="left"]]
 * 2) 4. Toughed glass[[image:Toughened-Tempered-Glass-DF-02-[1].jpg width="152" height="123" align="left"]]
 * 3) 5. Clip silk glass[[image:Clip_silk_glass.jpg width="152" height="123" align="left"]]
 * 4) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 4. Toughed glass[[image:Toughened-Tempered-Glass-DF-02-[1].jpg width="152" height="123" align="left"]]
 * 2) 5. Clip silk glass[[image:Clip_silk_glass.jpg width="152" height="123" align="left"]]
 * 3) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 4. Toughed glass[[image:Toughened-Tempered-Glass-DF-02-[1].jpg width="152" height="123" align="left"]]
 * 2) 5. Clip silk glass[[image:Clip_silk_glass.jpg width="152" height="123" align="left"]]
 * 3) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 4. Toughed glass[[image:Toughened-Tempered-Glass-DF-02-[1].jpg width="152" height="123" align="left"]]
 * 2) 5. Clip silk glass[[image:Clip_silk_glass.jpg width="152" height="123" align="left"]]
 * 3) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 5. Clip silk glass[[image:Clip_silk_glass.jpg width="152" height="123" align="left"]]
 * 2) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 5. Clip silk glass[[image:Clip_silk_glass.jpg width="152" height="123" align="left"]]
 * 2) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 5. Clip silk glass[[image:Clip_silk_glass.jpg width="152" height="123" align="left"]]
 * 2) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 5. Clip silk glass[[image:Clip_silk_glass.jpg width="152" height="123" align="left"]]
 * 2) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]
 * 1) 6. High performance insulting glass[[image:performance.jpg width="96" height="139" align="left"]]


 * 1) 7. Glass Mosaic[[image:mosiac.jpg width="82" height="126" align="left"]]
 * 2) 8. Sandwich glass[[image:sandwich.jpg width="104" height="150" align="left"]]
 * 1) 8. Sandwich glass[[image:sandwich.jpg width="104" height="150" align="left"]]
 * 1) 8. Sandwich glass[[image:sandwich.jpg width="104" height="150" align="left"]]
 * 1) 8. Sandwich glass[[image:sandwich.jpg width="104" height="150" align="left"]]
 * 1) 8. Sandwich glass[[image:sandwich.jpg width="104" height="150" align="left"]]
 * 1) 8. Sandwich glass[[image:sandwich.jpg width="104" height="150" align="left"]]
 * 1) 8. Sandwich glass[[image:sandwich.jpg width="104" height="150" align="left"]]
 * 1) 8. Sandwich glass[[image:sandwich.jpg width="104" height="150" align="left"]]
 * 1) 8. Sandwich glass[[image:sandwich.jpg width="104" height="150" align="left"]]

The history of glass 1 At the first time, the glass came from the volcanic acidic rock which was freezing. 2 .3700BC, Egyptian could make the decorations of glass and the simple kitchen ware of glass. 3. BC 1000, Chinese made the transparent glass. 4 The 12th century, the glass of commodity started to appear.

How is glass made? The main raw materials: silica sand (sandstone), soda ash, feldspar, dolomite, limestone. 1 . put all the materials and follow proportion to mixing. 2. Put all the mixture to the glass smelting kiln under1700 degrees and the mixture will become vitreous humor (liquid glass). 3. We use the vitreous humor form some devices, such as flat glass, bottles, and the vessels, and the light bulb, glass tube, the screen... 4. Put the all kinds of glass products into annealing kiln to balance the stress, so prevent the glass crack.

What are the functions of glass? 1. The plate glass is a traditional glass product and is used for the windows. It can play a pervious to light, keep off the wind and keep the warm temperature. It has good transparency and the surface is smooth.

2. The surface of obscure glass has decorative pattern design and is pervious to light, but it can keep out of sight. It has good decorative effects.

3. Hollow glass is made from two layers or two layer above ordinary flat glass place is formed. It has good heat and sound insulation. It often used for heating air-conditioner and the attenuation of the outer glass decoration facilities.

4. Toughened glass has high strength, flexural strength and safety performance is good. It used for doors and windows interval wall and cabinet door.

5. The nickname of Clip silk glass is the broken glass. When the high temperature burn without cracking, the piece of the glass can’t hurt the people. Otherwise, it can prevent the thief to steal everything from your home. It used for housetop scuttle and the window of balcony.

6. High performance insulating glass can cut off the sun's ultraviolet. It can save the energy, heat insulation, heat preservation and improve the environment of the bedroom. The outside look of this glass has 8 colors and brilliant art value.

7. Glass Mosaic has cold and heat stability and the color can’t change. There is no dust and the volume is light, so it always used for balcony decoration. Its compressive strength tensile strength, bloom temperature, water resistant can reach the standard of nation.

8. Sandwich glass is a kind of glass safety. It has good safety. When the glass breaks into piece, it can’t hurt the people. It has light, heat, wet resistance. It used for the border with outdoor doors and windows.

Glass is an important invention for life, in the “Anthem” is the same. Glass is one of the inventions of “Anthem”. Except for the glass, people from “Anthem” created candle. They would use candle to provide light and use glass to make window, kitchen ware and make house. Because of glass’s variety, people used glass in the future from the book. Its function can support the world follows normal operation except other functions from nowadays. When the protagonist Equality from the book invents the light, the glass is important for his invention. The light bulb is made of the glass. If the glass does not exist, he may be spends more time to invents light bulb. The glass is packing the lamp filament and it can prevent the electricity to hurt people. The glass tries to change the social nature indirectly. Because of “light”, Equality goes to Council of Scholar and wants to show his inventions to scholars. In the Scholar’s mind, this invention was evil and would change the society, because this light is individual invention. The raw material of light bulb is glass, so the glass can’t get rid of its “sin”. Because of this special glass, Equality discovers more things in his future. When he goes to the Uncharted Forest, he meted Liberty and they discover a glass house. The glass house is bright and widen and they had their own house to live and the house give their hope. When they went into the house, they discover a thing which can let them see themselves clearly. This thing is called mirror, but they don’t know. The glass let them recognize themselves again. When they see their appearances from the mirror, they recognized “he is he” and “she is she”, not more “we” again. The glass inspires their minds indirectly. Glass is sin from the book, the people cheats themselves. If the glass doesn’t exist, maybe Equality couldn’t commit a crime quickly.
 * The connection between glass and Anthem **