Abstract

The variable colors produced in polychromatic glasses by an optical/thermal treatment are analyzed in terms of a specific geometric model. The calculations, based on small-particle scattering theory, involve the specific shape of the silver on the sodium halide microcrystal that is formed in the process and account for the color shift with the optical/thermal treatment. In addition, absorption calculations were made to explain the formation of the microcrystalline phase.

© 1979 Optical Society of America

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