The symbiosis of electrons and light forms the basis of life: the electrons' microscopic motion creates light, which supplies our globe with life-giving energy from the sun; electrons transform light into biological energy during photosynthesis and into biological signal endowing us with the capability of seeing the world around us. Upon their motion inside and between atoms, electrons emit light, carry and process information in biological systems and man-made devices; create, destroy, or modify molecules, affecting thereby biological function. Consequently, they are key players in physical, chemical, and life sciences; information, industrial, and medical technologies likewise.

The motion of electrons and light wave oscillations (being mutually the cause of each other) occur at an inconceivable pace, measured in billionths of a billionth of a second, in attoseconds. By drawing on their interaction, attosecond science aims at measuring, controlling and exploiting these processes: electron motion & light waves. Attosecond Science extends the symbiosis of light & electrons from nature to technology.