The Nobel Prize in Physics has been awarded to Pierre Agostini, Ferenc Krausz and Anne L'Huillier for their work using attosecond (one billionth of a billionth of a second) pulses to study electrons inside atoms. @JenLucPiquant reports for @arstechnica on how the work developed and the winners' responses to the news. L'Huillier, only the fifth woman to receive the Nobel Prize in Physics, was lecturing when she heard, and kept on teaching.