Dynamics of glass relaxation at room temperature.

The problem of glass relaxation under ambient conditions has intrigued scientists and the general public for centuries, most notably in the legend of flowing cathedral glass windows. Here we report quantitative measurement of glass relaxation at room temperature. We find that Corning® Gorilla® Glass shows measurable and reproducible relaxation at room temperature.

Topological origin of stretched exponential relaxation in glass.

The physical origin of stretched exponential relaxation is considered by many as one of the oldest unsolved problems in science. The functional form for stretched exponential relaxation can be deduced from the axiomatic diffusion-trap model of Phillips. The model predicts a topological origin for the dimensionless stretching exponent, with two "magic" values emerging: β = 3/5 arising from short-range molecular relaxation pathways and β = 3/7 for relaxation dominated by longer-range interactions.

Iris melanoma in 12-year-old boy.

A 12-year-old boy presented with an incidental finding of an iris lesion after blunt injury. Ocular examination revealed a large atypical brown vascular nodule in the nasal iris, extending to the pupillary margin. There were smaller scattered nodules scattered within the iris and anterior chamber.