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Ultrafast science

Ultrafast science

How long does the photoelectric effect take?

20 Sep 2018 Hamish Johnston
Photoelectric effect
In a flash: artist's impression of the photoelectric effect. (Courtesy: Technical University of Vienna)
Just 45 quintillionth of a second (45 attoseconds) is all it takes for a photon to liberate an elect

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Hamish Johnston is an online editor of Physics World
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