120 Years of Optical Glass Science

Peter D. Dragic and John Ballato

An elegant, century-old mathematical relationship, tying the physical properties of a multicomponent glass to those of its chemical components, still provides a powerful tool in designing materials for fiber lasers and other applications.



A colleague once said that it can take just 11 years for the scientific community to forget a published achievement—perhaps because the work was ahead of its time, was viewed skeptically, or was otherwise misunderstood. In the pre-Internet era, it might have been tucked away in the annals of a university library, only to be rediscovered as a “first” years later.

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