Nobel Prize in Physics Awarded To 3 Scientists for Illuminating How Electrons Move

The Nobel Prize in Physics was awarded to Pierre Agostini, Ferenc Krausz and Anne L'Huillier on Tuesday for their experiments that "have given humanity new tools for exploring the world of electrons inside atoms and molecules." From a report: Electrons move at a whopping 43 miles a second. This speed long made them impossible to study. The new experimental techniques created by the three scientist-laureates use short light pulses to capture an electron's movement at a single moment in time. Think of a rotating fan at its highest speed: each blade is a blur. But if you point a strobe light at the fan, every flash will illuminate a frozen moment in time. As the flashes get shorter, more information about the fan is revealed. To study the movement of electrons, the scientists had to use pulses of light that last an attosecond. An attosecond is one quintillionth of a second. The number of attoseconds in a single second is the same as the number of all the seconds that have elapsed since the universe burst into existence 13.8 billion years ago, according to the Royal Swedish Academy of Sciences, which awards the Nobel Prizes. Eva Olsson, the chair of the Nobel Committee for Physics, said at a news conference on Tuesday that attosecond science "allows us to address fundamental questions" such as the time scale of the photoelectric effect, the release of electrons from a material when light shines on it. Albert Einstein received the 1921 Nobel Prize in Physics for his discovery of this effect. Accessing the ultrafast world of electron motion may also lead to advances in electronic circuitry, drug design and the materials used for batteries.

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