## Glass, Volume 1 |

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Page 112

At

and n is a constant , then the darkening term in Eq . ( 5 ) will initially increase with

increasing T but cannot do so indefinitely because of the T in the denominator .

At

**equilibrium**ka [ ( 1 – n ) T – A ] : - k , A ( A + nT ) 1 + f ( A + nT ) If f is not zeroand n is a constant , then the darkening term in Eq . ( 5 ) will initially increase with

increasing T but cannot do so indefinitely because of the T in the denominator .

Page 189

If a sample is held to

composition are given by Eq . ( 32 ) , with T = T , . At some time t = 0 the sample (

in

< T . In ...

If a sample is held to

**equilibrium**at a temperature T 1 , the fluctuations incomposition are given by Eq . ( 32 ) , with T = T , . At some time t = 0 the sample (

in

**equilibrium**at T1 ) is placed in contact with a thermal bath at a temperature T2< T . In ...

Page 190

experimental conditions described above correspond to the requirements that F (

x , t ) = fi ( X ) tso ( 58a ) and f ( x , t ) = $ 2 ( X ) 00 ( 586 ) where fı ( X ) and f2 ( X )

are the

experimental conditions described above correspond to the requirements that F (

x , t ) = fi ( X ) tso ( 58a ) and f ( x , t ) = $ 2 ( X ) 00 ( 586 ) where fı ( X ) and f2 ( X )

are the

**equilibrium**distribution functions corresponding to temperatures T1 and ...### What people are saying - Write a review

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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