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Stories by David Biello

The Sciences

What's in a Femtosecond of Laser Light? A Map of Electron Energy

Illuminate a piece of metal, such as copper or silver, and the electrons get excited. These excitable particles in turn alter the electromagnetic fields that give rise to many of the properties technologists exploit, such as copper's excellent performance as a conductor of electricity.Efforts to observe electrons have become easier in recent years, thanks to advances with incredibly short laser pulses, despite the foundational principles of quantum mechanics that hold sway at this scale...

January 6, 2012 — David Biello
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