Glass & Light

This paper discusses glass as an engineered material in its traditional role to control the propagation of and to spectrally modify light in the performance of optical functions. Also considered is , which provides the capability to convert absorbed light of a particular frequency to emitted light of a lower frequency and as a necessary condition for light amplification through spontaneous emission of radiation. Finally, glass is considered in the framework of high-energy particle physics experiments, including its use as a scintillator material and as a Cerenkov radiation detector.