Glass, Volume 1 |
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Page 77
Glassy P20 , appears to resemble the orthorhombic form . Wong and Angell (
1971 ) have used group theoretical ... Reliable ir absorption data on P20 , do not
appear to be available . Kolesova ( 1957 ) measured the ir and Raman spectra of
...
Glassy P20 , appears to resemble the orthorhombic form . Wong and Angell (
1971 ) have used group theoretical ... Reliable ir absorption data on P20 , do not
appear to be available . Kolesova ( 1957 ) measured the ir and Raman spectra of
...
Page 99
The absolute darkening sensitivity has not been measured , but it appears to be
comparable to the more sensitive silver halide glasses . The induced absorption
coefficient is considerably higher than that found in silver halide glasses .
The absolute darkening sensitivity has not been measured , but it appears to be
comparable to the more sensitive silver halide glasses . The induced absorption
coefficient is considerably higher than that found in silver halide glasses .
Page 289
It does not appear to this author that the advantage of one expression over the
other is overwhelming . Therefore , the more conventional expression of the
dielectric constant ε * will be employed throughout the remainder of this chapter .
It does not appear to this author that the advantage of one expression over the
other is overwhelming . Therefore , the more conventional expression of the
dielectric constant ε * will be employed throughout the remainder of this chapter .
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absorption alkali annealing applied assumed atoms band birefringence bleaching bond borate glasses Bray Brillouin calculations caused Ceram charge Chem coefficient color composition concentration conductivity considered constant containing coordination copper crystal crystalline curve darkening density dependence described detailed determined dielectric diffusion discussed distribution effect electron energy equation equilibrium et al experimental fading field fluctuations frequency function given gives heat treatment hole increased indicated intensity ions levels light liquid material measured mole negative observed obtained optical oxide oxygen particles phase photochromic Phys polarization positive present probably produce properties range ratio reduced relaxation reported respectively sample scattering separation shift shown in Fig silicate glasses silver halide similar SiO2 sodium Solids spectra spectrum strain stretching structural studied Taylor techniques temperature term thermal tion transition trapped units unpublished wavelengths York