attosecond
/ˈætoʊˌsɛkənd/
noun
- One quintillionth of a second (10⁻¹⁸ seconds), an extremely short unit of time used in physics and chemistry to measure the movement of electrons.
- An attosecond is to a second what a second is to the age of the universe.
- Scientists used an attosecond laser pulse to observe electrons jumping between atoms.
- The new camera can capture events lasting just one attosecond.