The relation of viscosity of glasses to load, temperature and time in the range 108–1013 poises. Part II
JSGT 1957 V41 T295-T303
In the viscosity range of 1013 P and higher a peculiar time effect was observed as the temperature of measurement was lowered with the load remaining constant and also when the load was altered keeping the temperature constant. This phenomenon is shown to be closely related to the density of glass and its relationship with the glass structure is discussed.
M. Watanabe, T. Chida & K. Takizawa