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PhysicsScaling energy barriers to save data
Researchers demonstrate a promising new way to make semiconductor-based memory that doesn't erase when the power goes off.
By Peter Weiss -
PhysicsSpectral 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.
By Peter Weiss -
HumansFrom 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.