Issues

Short‐range impurity states in ternary III‐V compounds enhance radiative recombination rates, thereby aiding the color tunability of semiconductor lamps and lasers.

A computer simulation shows how very‐low‐frequency emissions can be triggered in the magnetosphere and then propagate as “whistlers.”

Estimates of US energy resources and projections of future energy consumption show that the country has enough fossil fuel to last 500 years and enough nuclear fuel to last for a million years.