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Physics

Spectral atom rings in

Electron waves can generate a phantom atom when a real atom is placed at the right spot inside an elliptical quantum corral, or loop of atoms, arranged on a surface.

Humans

From the August 13, 1932, issue

ONLY HALF OF LIGHTNING FLASH IS SEEN BY OBSERVERS Not many years ago, a thunderstorm often meant that the supply of electricity would be interrupted. But now, lightning does not cause power line failures nearly as frequently as it used to; it has been tamed by engineers. Laboratory artificial power lines that duplicate actual conditions […]

Health & Medicine

One more reason to worry

A single dose of the AIDS drug nevirapine, given to mothers to help prevent them from infecting their children during birth, may be enough to prod the virus to develop drug resistance.