Glass, Volume 1 |
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Page 92
Photochromic glasses have several advantages over other photochromic
materials simply because they are glasses . By use of standard glass - melting
and glass - forming techniques they can be made in any desired size or shape .
Photochromic glasses have several advantages over other photochromic
materials simply because they are glasses . By use of standard glass - melting
and glass - forming techniques they can be made in any desired size or shape .
Page 95
At constant cadmium oxide percentage , the photochromic effects depend only
weakly on composition . Heat treatment was not found to alter the photochromic
effects . The shape of the induced spectrum was very nearly flat throughout the ...
At constant cadmium oxide percentage , the photochromic effects depend only
weakly on composition . Heat treatment was not found to alter the photochromic
effects . The shape of the induced spectrum was very nearly flat throughout the ...
Page 96
Photochromism has been observed in several systems where crystallites are
suspended in a glassy matrix . ... over the homogeneous glasses is that their
physical properties can often be varied independently of their photochromic
properties .
Photochromism has been observed in several systems where crystallites are
suspended in a glassy matrix . ... over the homogeneous glasses is that their
physical properties can often be varied independently of their photochromic
properties .
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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