Definition of "femtochemistry" []

• The study of chemical reactions on a very short time scale, often using pulsed lasers (noun)

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• "Zewail (born 1946 in Egypt) at California Institute of Technology received the Nobel Prize for Chemistry in 1999 for his development of "femtochemistry" and in particular for being the first to experimentally demonstrate a transition state during a chemical reaction."
• "Other projects arising from the partnership include research in the field of femtochemistry and laser spectroscopy."
• "Twelve years ago he published results that gave birth to the scientific field called femtochemistry."