This unit of time represents one billionth of a second (10⁻⁹ s). It is the standard scale for measuring the speed of computer memory, logic gates, and fibre optic data transmission. Light travels exactly 29.979 centimetres in a vacuum during this interval, making it a critical unit for calculating latency in high-frequency trading and telecommunications.
Heard on the job
The signal propagation delay across the backplane is roughly twelve nanoseconds.
Insider tip
A common rule of thumb in hardware engineering is that one nanosecond equals about one foot of wire for electrical signals.