Gless
Appearance
![](http://chped.net/https/upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Glass-Ball.jpg/220px-Glass-Ball.jpg)
Gless is an amorphous (non-crystalline) solid material that exhibits a glass transeetion, that is the reversible transeetion in amorphous materials (or in amorphous regions athin semicrystalline materials) frae a haird an fair brickle state intae a molten or rubber-lik state. Gless is teepically brickle an can be optically transparent. The maist fameiliar kin o gless is soda-lime gless, that is componed o aboot 75% Silicon dioxide (SiO2), sodium oxide (Na2O) frae soda ess, lime (CaO), an several minor additives. The term gless is aften uised tae refer anerly tae this specific uise.
![](http://chped.net/https/upload.wikimedia.org/wikipedia/commons/thumb/3/36/Notgeld%2C_St%C3%BCtzerbach%2C_1921%2C_10_pfennigs_1.jpg/170px-Notgeld%2C_St%C3%BCtzerbach%2C_1921%2C_10_pfennigs_1.jpg)