Glass Transition on Cooling and Aging for Structural Glasses : Eliva Press : 9789994985494 : 9994985493 : 12 Jan 2023 : Glass is out of equilibrium and reduces into an equilibrium solid. This whole process is a thermodynamical phase transition, while the so-called glass transition is an observable transition with no changes in structure. We describe that the glass transition is a purely kinetic phenomenon due to strong fluctuations in molecular configurations in supercooled liquid. Intermediate-range orders (IROs) have important roles on the glass transition process which is explained by the embryo and freezing of IROs. We conclude that the glass transition is an emergence of a new system of glass in a nonequilibrium state and a glass is a nanomaterial which is composed of a periodic nano-structure of IROs. The mean field theory introduced the random first order transition (RFOT) as the ideal glass transition which prevents the Kauzmann paradox. Recently, an ideal glass was realized us