Thomas Parnell Time:From1927 to now , and it will lasts for another 100years
crystal
amorphous
Character : Irregular arrangement Uncertain melting point Isotropic (各向同性)
In the ancient times
Obsidian(黑曜石)
Cutting meat
The first glass: 5000 years aห้องสมุดไป่ตู้o, made by The Babylonians(古巴比伦人)
China, Third Century BC to Fourth Century BC
In the Seventeenth Century
Ravenscrofe created the Lead glass(铅玻璃)in 1673~1676 Knaff created the method to make the bulk and large glass in 1688(glass becomed popular)
In the ancient times Ancient Egyptians created the method of making glass container: Sixteenth Century BC Kwantil Pilamixi, 1200 BC
The glass decoration in the Sword of The Yue’s King
In the Eighteenth Century
High quality transparent glass was created
In the modern times
Plate glass : created by Belgian,1873
Metallic glass(金属玻璃)
Varieties of glasses were created: architecture, transportation, optics, electronics , e.g.
Metallic glass alloy
Advantages and characters
Created in the 1970s, by American scientists
Soft magnetic properties
Magnetic permeability
Resistivity
Metallic glass alloy--- Transformer
Solar cell
Solar tent---- the travel artifact
Liquid metal
The liquid metal is one of the metallic glasses , and it will melt when the temperature is low , so it can realize self healing easily.
Amorphous Glass and Our Life
(非晶)
• What is the amorphous substance?
• How it been found and developed?
• The development trends about the amorphous glass
Purpose: Bitumen(沥青) is liquid rather than solid . Process: The first drop of bitumen wastes 8 years , and he only saw three drops when he was died.
Result: His relay John Menston and others take photos of the drops of bitumen successfully. Scientists is waiting for the tenth drop.