Time index of refraction isotherms for a borosilicate glass in the transformation region have been established. By comparing two quenched glasses of the same index, one quenched after attaining equilibrium at a given temperature and the other quenched from a temperature at which the specimen was approaching a higher value of index, curves similar to the one obtained by Ritland in comparing rate cooled and quenched specimens are developed.
Origin
Unknown
Journal Title
Journal Of Research (Nbs) Section A Physics And Chemistry 70A 2 1966 147-152
Sector
Primary Papers
Class
PP 1447