Nanosecond

A nanosecond is one billionth of a second, (10^-9 s). This time so short that it is not used in daily life, but is of interest in certain areas of physics, chemistry, electronics and computing. Thus, a nanosecond is the duration of one clock cycle of a 1 GHz processor, and is also the time it takes for light to travel approximately 1 foot ft or 30 cm. It is represented as ns.