subnanoseconds
Subnanosecond refers to a duration of time that is less than one nanosecond. A nanosecond is one billionth of a second (10^-9 seconds). Therefore, subnanosecond durations are extremely short intervals of time.
To put this into perspective, light travels approximately 30 centimeters (about 1 foot) in one nanosecond. In
Examples of phenomena occurring on subnanosecond timescales include the emission of photons from excited atoms or
The measurement and manipulation of events on such short timescales require highly specialized equipment and techniques.