The transition which occurs when a liquid is cooled to an amorphous or glassy solid; occurs if the cooling rate is so fast that normal crystallization is prevented.
The glass–liquid transition is the reversible transition in amorphous materials from a hard and relatively brittle state into a molten or rubber-like state. An amorphous solid that exhibits a glass transition is called a glass. Supercooling a viscous liquid into the glass state is called vitrification, from the Latin vitreum, "glass" via French vitrifier. Despite the massive change in the physical properties of a material through its glass transition, the transition is not itself a phase transition of any kind; rather it is a laboratory phenomenon extending over a range of temperature and defined by one of several conventions. Such conventions include a constant cooling rate and a viscosity threshold of 10¹² Pa·s, among others. Upon cooling or heating through this glass-transition range, the material also exhibits a smooth step in the thermal-expansion coefficient and in the specific heat, with the location of these effects again being dependent on the history of the material. However, the question of whether some phase transition underlies the glass transition is a matter of continuing research.
The numerical value of glass transition in Chaldean Numerology is: 1
The numerical value of glass transition in Pythagorean Numerology is: 8
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"glass transition." Definitions.net. STANDS4 LLC, 2018. Web. 17 Jan. 2018. <http://www.definitions.net/definition/glass transition>.