How many nanoseconds are in a second?
Nanosecond
0.5 nanoseconds – the half-life of beryllium-13.
0.96 nanoseconds – 100 Gigabit Ethernet Interpacket gap
1.0 nanosecond – cycle time of an electromagnetic wave with a frequency of 1GHz (1×109 hertz).
1.0 nanosecond – electromagnetic wavelength of 1light-nanosecond. Equivalent to 0.3m radio band.
1.016703362164nanoseconds (by definition) –  time taken by light to travel 1 foot in a vacuum.[n 1]
1.1 nanoseconds – a commonly-used rough definition of a "light-foot".cf.[1][2]
3.3356409519815nanoseconds (by definition) – time taken by light to travel 1 metre in a vacuum.[3]
10 nanoseconds – one "shake", (as in a "shake of a lamb's tail") approximate time of one generation of a nuclear chain reaction with fast neutrons
10 nanoseconds – cycle time for frequency 100MHz (1×108hertz), radio wavelength 3 m (VHF, FM band)
12 nanoseconds – mean lifetime of a K meson[4]
10 nanoseconds – half-life of lithium-12
20–40 nanoseconds – time of fusion reaction in a hydrogen bomb
30 nanoseconds – half-life of carbon-21
77 nanoseconds – a sixth (a 60th of a 60th of a 60th of a 60th of a second)
96 nanoseconds – Gigabit Ethernet Interpacket gap
100 nanoseconds – cycle time for frequency 10MHz, radio wavelength 30m (shortwave)
299 nanoseconds – half-life of polonium-212
333 nanoseconds – cycle time of highest medium wave radio frequency, 3MHz
500 nanoseconds – T1 time of Josephson phase qubit (see also Qubit) as of May 2005
1,000 nanoseconds – onemicrosecond
1,000,000 nanoseconds – onemilisecond (ms)