noun
- Plural of femtosecond; units of time equal to one quadrillionth of a second (10⁻¹⁵ seconds).
Usage: scientific/technical term; commonly used in physics, chemistry, and optics
Examples
- Laser pulses lasting only a few femtoseconds can capture molecular motion in real time.
- The experiment measured chemical reactions occurring on the femtoseconds timescale.
- Femtoseconds are used to study ultrafast processes in materials science.
- The new spectroscopy technique achieves femtoseconds resolution.
- Researchers used femtoseconds pulses to observe electron dynamics in atoms.