In this video explains Glass is a transparent or translucent material. It is a non crystalline or amorphous substance. Glass acquires solid state appearance because of increase in viscosity on rapid cooling. Glass is described as super cool liquid.

ที่มา : Elearnin
ลิงค์ : https://youtu.be/-z1P2cK9Rro
อัพโหลดโดย : Elearnin